Purchased Samsung N128 Mini Laptop

I purchased a Netbook from Samsung(Samsung N128) two weeks ago and I think it is the time to write a review of it. It is travel friendly because of small size and now a days I need to travel a lot. While on journey, it is difficult to carry my laptop because of its size and that is why I planned to go for a mini laptop. After checking different brands, finally I decided to buy Samsung N 128. In this article I would like to share my review about Samsung N 128 netbook. The below picture shows how it looks like.


Small Laptop


Samsung N 128 Mini Laptop Configuration

Processor Intel ATOM 1.6 Ghz Processor ( ID:N270)
RAM 1 GB DDR-2 Ram
Hard disk 160 GB HDD
Monitor 10.1" Wide LED Screen (Extra bright)

Other Features
  • Father Ethernet port

  • Webcam

  • WiFi

Ports

Available Ports and connectors on Samsung N 128 Mini Laptop are:
  1. 3 USB 2.0 ports,

  2. VGA out,

  3. DC power-in,

  4. RJ-45/Ethernet (10/100),

  5. Stereo headphone/line out,

  6. Stereo microphone in,

  7. VGA webcam,

  8. Kensington lock port.

Total weight of this netbook is around 1.25 kg and it has a 6 cell battery. This product is protected with one year warranty. I bought non OS installed version and I installed Windows 7 and Ubuntu. It supports both operating systems perfectly well.


Samsung N128 Mini Laptop Review

It is working great than I expected. First I failed to find WiFi adapter driver compatible with Windows 7. The setup disc has only Windows XP version of Wireless adapter driver. I downloaded the latest version of wireless adapter driver from manufacturer website. I must say, speaker volume is lesser than I expected. It has 1.5 watts Speaker. The volume is very low and I need to use headset to hear the sound properly. Another point I want to point out is about battery backup. Shop owner promised me about 8 hour battery backup but when I check it is just 6 hours only. Beside this speaker volume issue, I am satisfied with Samsung N 128 netbook.

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New Topics

Open System Volume Information Folder On Windows Computer

Have you ever thought about the location where System Restore points are stored on a computer? System Volume Information Folder stores system restore points on your computer and helps you to recover previous setting on your computer in difficult times. One important fact about it is its high security and even the user with Administrator privilege cannot take the ownership of the folder directly and open it. Do you want to open it and check how it looks like ? Though we cannot do it in straight methods, there is always some backdoor method to perform it. This tutorial explains the steps to open System Volume Information folder by taking ownership of it.


Open System Volume Information Folder

This procedure is to open System Volume Information folder on Windows XP computer. To open System Volume Information folder on Windows 8 and Windows 7 computers, read my other tutorials. You can find those tutorial using the Search feature on CoreNetworkZ.
  1. Open My Computer and Click on Tools (On Top menu)

  2. Click on Folder Options and click View tab

  3. Follow the steps below.

    • Select Show hidden files and folders

    • Uncheck the Hide protected operating system files (Recommended) check box.

    • Uncheck Use simple file sharing (Recommended) check box

      Click Yes when it need confirmation.Now Click on Save and OK.
      Access



  4. Grant Access to System Volume Information folder

    • Right Click on the Folder and Click on Properties

    • Click on Security tab

    • Now we need to add the user account from which we need to access the  Folder.

    • Click OK button to finish this process

Now you are authorized to access this feature and see what is inside in it. Once you are done with it, it is better revert the security settings you have changed. It is because if the user has the privilege to sensitive features, any possible infections on that user account can infect them. If any other user is having access to this account, it might even worse the situation. It is not a wise decision to configure this feature in a way to open for anyone who use the account.

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Google Public DNS Server Address and Configuration Tips

If you are unhappy with the response time of your ISP's default DNS server, there is a good news for you. Google announces Google Public DNS service which is free for everyone. Right now, most of the Internet users who are unsatisfied with the Domain Name System service provided by their ISP use either global or open DNS server on their computers and other devices. Now we have one more option, Google Public Domain Name System. They use easy to remember address for their server compared to most other free services. This tutorial gives a brief explanation of this new service and tips to configure it on your computer.


Google Public DNS Server Addresses

For IPv4 connections you can use the addresses below.

  • Preferred Google DNS Server - 8.8.8.8

  • Alternate Google DNS Server -8.8.4.4

For your IPv6 connections, use the following addresses.

  • 2001:4860:4860::8888

  • 2001:4860:4860::8844

Important Tips
  1. Configuration

    If you do not know how to set Domain Name System server on your Windows computer, visit the link below.

    Setup Domain Name System on Your PC from Command Prompt
    Setup

  2. Support

    Google has launched telephone support to assist users with issues related to their Public Domain Name System service. They assist users both from USA and outsiders. Technical support number are:

    * 877-590-4367 { For US customers }

    * 770-200-1201 { Outside US }

  3. Google DNS On Android Samsung Galaxy

    If you are using Wi-Fi to connect your Android phone to Internet, you have an option to change the DNS settings on phone. You can change the current settings on your Android phone under Wi-Fi settings (Choose Current Network -> Modify Network -> Enable Show advanced options ->Enter Domain Name System details). Steps varies depends on the Android versions and customizations. However, I couldn't find a way to assign Google Public DNS to 3G Internet on my Samsung Galaxy phone.


They have a tutorial for Linux users to change DNS settings on their Linux computers. To know more about it, visit the link below.
http://code.google.com/speed/public-dns/docs/using.html

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How to Delete / Remove Saved Passwords From Internet Explorer

Have you ever faced the situation where your email username and password auto saved on Internet Explorer browser in a public cafe ? One of my friends had such a situation and he didn't know how to remove the the saved username and password from Internet Explorer. Comparing to other browsers like Firefox and Chrome, deleting stored username and password from IE is little tricky. With IE7 and above versions, it is simple but for IE6 it is not very simple. This guide explains how to delete auto stored username and password of your Internet accounts on IE 6 and higher versions.



Remove Saved Password From Internet Explorer 6

  1. Open Internet Explorer version 6

  2. Click on Tools

  3. Click on Internet Options

  4. Click on Content tab

  5. Click on AutoComplete button
    Clear passwords in IEv6

  6. Now click on Clear Forms and Clear Passwords buttons

The saved passwords and Forms will be removed now.


How to delete passwords and Forms from Internet Explorer 7

The steps to delete saved passwords and Forms from IE version 7 are:
  1. Start Internet Explorer (IE) 7

  2. Click on Tools

  3. Click on Internet Options
    clean

    Now click on the Delete button under Browsing History.

  4. Click on Delete Passwords button
    Washing stored private data

Now the saved password in IE 7 is removed. By comparing password removal on IE6 and later versions, it is clear that, Microsoft makes things easy and clear on higher versions of its browser. My friend was using IE6 and that is why he failed to remove the saved password. Without removing the saved data on browser, he went to change his email password in order to protect his email account from other users on that computer.

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My Computer Restarts Automatically - Reasons & Solution

We have discussed many hardware related issues on this blog. This tutorial tells one of the common computer issues, unexpected automatic restarting of a computer. Once I faced this situation where my computer rebooted automatically without providing any warning and I lost every unsaved works. For a week this issue continued and at last I fixed. I believe having a guide for those who face the same problem can be very helpful to identify the reasons for the automatic restarting of their systems. If you can identify why your PC is rebooting suddenly without warning, you will be able to solve it very easily.

Reasons for Unexpected Automatic Reboot of Your Computer

Here we check common reasons for the issue. Some of them are software conflicts, hardware issues and virus infection. Let us check carefully why should a computer restart without giving any warning.

  1. Software /Driver Conflicts

    When your PC acts strange, first verify the last installed software or driver on your computer has no compatibility issues. After installing new software or driver on your PC, if it has any compatibility issues, you may face this issue. If you think the automatic rebooting issue started after installing any new software, you need to uninstall the software from your PC either by add/remove programs or by the built in software removal utility. If the issue persists even after uninstalling the software, you can perform a system restore to a date before the day when the driver was installed.

    1. Uninstall the recently installed software

    2. Perform system restore to an old date

  2. Hardware Issues

    If there are no software compatibility issues on your system, you may check for possible hardware issues. Here is a list of potential hardware problems that can make your PC restarts automatically.

    • Heat related issues

      Brand new Laptops and PCs are designed in a way to shut down or restart automatically if the processor heat exceeds a certain level. Make sure your laptop does not have any heat related issues. Visit the link below to protect your computer from overheating.
      Protect Your Laptop From Overheating

    • Corrupted system memory

      If the RAM modules in your PC are corrupted, that may cause automatic system reboot. To verify it you should start your PC with another piece of RAM and check for the issue.

    • Dust particles in your system cabinet

      Presence of dust particles in CPU may trigger automatic system restart. It is a good practice to clean system cabinet to make your PC free from dust particles.

    • Test Power Supply
      Faulty power supply to your PC can make sure your computer either shut down or reboot automatically without warning. Test it and if you find any issues with power supply, replace it immediately.

    • Possible loose connections

      It is also advised to disconnect hard disk, DVD drive from motherboard and reconnect to avoid any loose connection.

  3. Possible virus infection

    There are some computer viruses powerful enough to reboot your computer without your permission. It is better perform a virus scan on your computer using a reputed Antivirus software.
    Industry's Top Rated Best Free Antivirus With Download Link

Quick Fix to Automatic System Reboot Issue

If you are desperately looking for a quick fix to automatic rebooting issue, you can tell your computer to don't restart automatically for any system error. By default Windows set automatic system reboot on every system failure. Though this option is for preventing further damages on your system, it is really frustrating to see unwanted system reboot for smaller issues. It is better you have the control to reboot your computer instead of automatic reboot by your computer without your permission. In case if you want to disable automatic system reboot on system failure set on your computer, you can disable it under Startup and Recovery. You will see a checkbox to stop Automatic Reboot on Startup and Recovery settings window.
  1. Windows 8 & Windows 7

    1. Click Windows Start

    2. Right Click Computer in Start menu and click Properties
      Disable auto reboot

    3. Click Advanced System Settings
      Prevent Auto-reboot on system failure

    4. Click Settings button under Startup and Recovery
      Disable boot on system failure

    5. Uncheck Checkbox near Automatically restart
      How to Access Startup and Recovery

  2. For Windows XP

    1. Right click on My Computer icon

    2. Click the Properties

    3. Click on the Advanced tab.

    4. Click on the Settings button under Startup and Recovery.

    5. In the Startup and Recovery window uncheck the Automatically restart check box.
      Fix the automatic laptop restart issue

      Click OK.

PS: It is not a good practice to keep the checkbox at Automatically restart unchecked without fixing the exact reasons for the system failure.

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I Cannot Boot My Computer in Safe Mode

Yesterday was a tough day for me because of my old desktop computer. I couldn't  boot my PC in safe mode but it was working fine in normal mode. This tutorial is written based on my efforts to bring back safe boot on my PC with some extra tips. First part of this guide tells common reasons for getting trouble with restarting your computer in safe mode and the second part deals with solving this issue. I have Windows XP on the Desktop computer but the procedure to fix this issue is same for most Windows Operating Systems. Even if you are using Windows 8 or Windows 7, you can follow the instructions below.


Reasons For Having Troubles to Safe Boot a Computer
  1. Possible virus infection

  2. File system error

  3. Software / driver conflict

  4. Some windows files may be corrupted

  5. Windows update error

  6. False settings on the security suit installed on your computer
These are some of the possible reasons to prevent a laptop from restarting in safe mode. Now let us check how to troubleshoot the issue, identify the reason and fix it.

Solution to Issues With Safe Mode Restarting

First thing you must do is to find the exact reason which prevents your system from restarting in safe mode. For that you must use trial and error method. If you have no clue on how to do it, pattern of troubleshooting given below is best for you.
  1. Set Safe Boot in System Configuration

    First step you have to do is to access System Configuration page and enable Safe Boot option. You can do it by following the instructions below.

    • Type msconfig on Windows Search (or on Run Window and click OK)

    • Open msconfig Window and click Boot tab

    • Select Safe Boot under Boot options
      Issues with safe mode restarting

    • Click OK and When you are prompted to restart your computer press OK

    If still your computer is showing issues with safe mode booting, go to next step.

  2. Try Different Modes

    On boot menu options window, you can see other options like, start your computer in;

    • Safe mode with networking
    • Safe mode with command prompt

    Try to start your computer using these options.

    [ To get in to boot menu keep press on [F8] button while your computer starts restarting]


  3. Use Last Known Good Configuration

    If you have failed to start your computer in all available safe mode options, it is better try to boot your computer in last known good configuration by selecting that option from the menu.

  4. Run Check disk and correct disk errors

    The next troubleshooting step is to run the check disk and fix the disk errors. To do this type Chkdsk /f on the command prompt. Please note that you must have admin right to perform this task. After fixing the disk error, try to start your computer in safe mode. If the issue persists go to next step.

  5. Conflicts by Recently Installed software/driver

    Many users claim they had booting related issues after installing certain software products on their computers. According to many technology discussion forums, software products like DVD burning software, AntiVirus products, Data recovery products etc are accused causing booting issues. Before jump in to conclusion, I recommend you to disable each suspected programs and check the real culprit. It is recommended to perform a clean boot on your computer to identify the problem causing software. To know how to perform clean boot on your computer, click on the link below.
    How to perform clean boot and rectifies the software conflict

  6. False AntiVirus Settings

    Wrong settings on the security software (Firewall,AntiVirus etc) may prevent you from booting your computer in safe mode. So make sure security product installed on your laptop is having correct configuration.

  7. Possible virus infection

    Once my laptop was infected by a virus which blocked many features including safe restart. It is possible your PC might be infected and the malware is preventing it from restarting in safe mode. To remove any infection, you must perform a virus scan on your system with a reputed security software(updated with latest virus signature).

  8. Update to latest service pack and run windows update

    You must update Operating System to avoid known bugs and other issues. I recommend you to enable the option to check for latest Windows update to ensure your computer is having latest OS.

  9. Repair Windows files

    To repair corrupted Windows files on your system, follow the steps below.

    • Start your computer from Windows CD

    • Press R to repair the windows files while it ask you the option to install or repair Windows on your computer

    • After repairing Windows files, try to start your PC in safe mode

    If still you have the same issue, I recommend you to follow the next instructions.

  10. Reinstall Windows Operating System

  11. Format hard drive and reinstall Windows

  12. Try to disconnect the hardware devices like RAM, Hard disk etc from Motherboard and reconnect them

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How to Delete Google Web Search History From Your Account

Many Internet users are confused with the two similar terms 'Internet browsing history' and 'Google search history'. Though both terms look similar, they are different. Browsing history is saved on your web browser and can be viewed by pressing [Ctrl] and [H] buttons together. This key combination varies with browsers. Google Search history is the record of searches you have made while you are logged in your Google account. Internet browsing history will be deleted by clearing the saved history on your browser but Google search history will remain. There is a different procedure to remove it from your account. To see and delete Google search history, you need to log on to your Google account. Here you can see how to remove all previous log details and start from clean slate.


Steps to view Google Search History

To see it for a particular account, follow the steps below.
  1. Log on to respective Google account

  2. Click on account settings

  3. Click on web history
    log

    Some times you may be prompted to re-login to your account to see this page.

This page is well organized and you can view the Search history of all times. It will definitely influence Google Personalized Search feature. If you don't know this feature, visit the link below.
What is Google Personalized Search Results

If you do not like it affects the search results, it is better delete it from your account. Below section explains how to do it.


Steps to Remove Google Web Search History

  1. Click on Remove items

  2. Now check the items you need to remove and press Remove button.

Now entire stored data will be successfully removed from your account. Now onwards you will get a fresh start without any influence. If you belongs to the group of people who don't like to left the remnants of their previous activities on heir laptops, the procedure I explained in this tutorial is for you. By following the steps explained in this article, you can remove the log details of your activities stored in big G's server. However, it doesn't guarantee your safety from log details stored on server side by big G. All you can ensure is if someone hack in to your profile, he will never get the traces of your prior web activities. Now let us check some of our popular tutorials.

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Filter Important Emails From Gmail

Gmail is one of the most popular email service providers because of its reliable service and clean look. It offers a way to arrange the emails we receive according to our requirements. We can decide the fate of an email before reaching the inbox itself. For that we can use the feature filter to select certain type of emails according to the guidelines we set and apply the specified fate to them. It can help you to categorize emails in your account by assigning different Labels to them. This tutorial explains how to create a filter with your requirements and how to assign this filer to emails.

  1. Log on to your Gmail account

  2. Click on Settings
    Set

    Settings tab is ion the right hand top of the page.

  3. Click on Filters
    Categorize

  4. Click on Create a new filter. Now the filter options window will appear.
    ideas

    Here you can see options to set filters based on following criteria.

    • Filter based on from address

    • Filter based on To address

    • We can filter a particular subject

    • We can filter mails containing certain keywords

    • We can set filter by black listing certain keywords (opposite to iv )

  5. Enter the criteria to set filter and click next

    Now the wizard will ask you what will be the end action of the particular filter.  The possible actions are:

    • Skip the Inbox (Archive it)

    • Mark as read

    • Star the mail

    • Apply the label (We can set a particular label for this mail)

    • Forward to a particular mail

    • Delete the mail

    • Never send it to Spam

    After selecting appropriate actions click on Create Filter.

Once we create this, all the electronic mails satisfying the condition will have the fate we have configured. We can use the same feature to remove any unwanted messages coming to the inbox from a common sender. Though the messages are not from a common sender we can use the same filter feature to delete all of them by creating a filter with rules those satisfies the common characters of these unwanted messages. Though such a filter can remove a large portion of potential spam from your account, it is possible to get the same fate to a few genuine messages if any of those unfortunately have same characters. So it is important to be very careful while creating filter to avoid solicited messages from your inbox.

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Safe Browse With Google Chrome Without Storing Any Personal Details

Google Chrome supports browsing without saving third party cookies or browsing history on PC. This feature is named incognito and is very much similar to the  Firefox private browsing. When we start Chrome incognito window, it will stop storing cookies, visited page history, passwords entered, download logs etc. Once we close the window, all these information will be removed automatically. It means the next user will not find any browsing activity of the current user. This article is about different methods to start incognito window and browse  without leaving any history.

How to Start Chrome Incognito Pages

We can start private browsing window (incognito) of Google Chrome browser by different methods. Most of the important methods are listed below.
  1. By Keyboard Shortcut

    It is very easy to start Chrome safe browse using shortcut keys. We have to press the following three keys at the same time.
    [Ctrl] + [Shift] + [N]

    When you press the above key combination, a new Google chrome window will appear with following message.


    This page will inform you the specialty of the new window. If you want to learn more about this feature, you can click on 'Learn More' link.

  2. From Chrome Start Menu

    When you select Chrome from Windows start menu, you will get option to start either normal window or incognito window.

  3. From Customize Button

    You can start Google Chrome Private Browse from Customize menu. To do it, follow the instructions below.

    • Click on Customize and Control Button On right hand top of the page


    • Click on New incognito window

  4. Create Shortcut

    • Right click on Chrome Shortcut

    • click Properties

    • Add –incognito at the end of target and click apply


    Now onwards, whenever you need to start browsing without storing any third party cookies or offline log information on laptop, double click on this shortcut. It will open a private browse window and no browsing history will be stored on the computer.

It Can't Assure Cent Percent Safety

Google warns us, using incognito will not make us secure from other Internet threats. It cannot protect our data from websites which collect information from our computer by installing malicious codes. Agents who work with ISP can track our Internet activities unless we encrypt the entire communication. Incognito is also helpless against Malicious software products like Trojans or keyloggers if they are already installed on computers. Keylogging tools can track every keystrokes we make on a PC and either store the details or send to its server. Private browsing feature of a browser cannot prevent this activity. However, we can prevent the auto saving of cookies and browsing history on our laptop using incognito feature. Even the the download activities will not be entered to the download log file. In a nutshell, though this feature will not give anonymity of full safety, it is worth than browsing using normal browser window.

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Setup D-Link WBR-2310 Router With WPA Wireless Security Settings

WBR-2310 is a popular wireless router from D-Link and this article presents complete configuration of this device including WiFi security. First part of this guide explains how to setup WBR-2310 with auto configuration utility and the second part tells how to configure D-Link wireless network with latest security settings. D-link WBR 2310 is an IEEE802.11g router with range booster technology. It supports data transfer speed up to 108 Mbps and works in 2.4GHz frequency. It supports other features like DHCP, NAT etc. Manual configuration of this device is provided at the end of the guide.


Steps to setup D-Link WBR-2310 Wireless router
  1. Connect WBR-2310 to your computer

    Your computer should be connected to the LAN port of WBR-2310 using an Ethernet cable. Power on the device after connecting it to your PC.

  2. Log on

    To logon to WBR-2310 wireless router, type the default IP address of the router on the address bar. The default IP address of the D-Link WBR-2310 router is 192.168.0.1

    Before log on to the router, it will ask you the user name and password. For a factory new D-link router, enter the following details.

    • User Name : admin
    • Password : {Leave this field blank}

    There is no default password for D-link WBR-2310.

  3. Select Configuration Method

    You will be redirected to the settings page. Here you will see two different ways to configure WBR2310. They are by pressing Setup Wizard and Manual Configure. Here I use Setup Wizard button.
    join

  4. Click on Launch Internet Connection Setup Wizard

    To configure the Internet connection on this D-link router, click on the button Launch Internet Connection Setup Wizard.
    connection

    Now the wizard will show you what steps it is going to complete while running the wizard. Click Next to continue.


  5. Create new Password For D-link WBR-2310 Router

    Setup wizard will prompt you to create a new password for your WBR-2310 Wireless Router. After entering the password, click on next.
    password

  6. Select your Time Zone

    You can select the correct time zone for D-Link router.
    time

  7. Configure Internet connection

    Now you will get the option to setup the Internet connection for WBR-2310.
    ISP

    Here you must select the type of broadband connection you are getting from your ISP.

Convert D-Link WBR-2310 to WiFi Access Point
  1. Log in

  2. Click on Manual Configure button


  3. Select Enable Access Point Mode
    AP

    Now onwards you can use D link WBR 2310 as WiFi Access Point.


Enable Wireless Security On WBR-2310

D-link WBR-2310 Wireless Router supports WEP and WPA, two important wireless encryption. Here, let us check how to enable WiFi and WiFi security on this device.This section also cover configuring other necessary wireless settings on WBR2310  like wireless channel, SSID etc.
  1. Click on Wireless Settings

    • Check Enable Wireless check box

    • Change Wireless Network Name to a preferred name

    • Select Security Mode

    We can select either WEP or WPA from the list. The enhanced security modes like WPA2 and WPA2 Auto are also available.
    Safety

  2. Enable WEP

    WEP

    Select WEP Wireless security from the list. Now we will get WEP settings page.Here we can select either 64 bit encryption or 128 bit encryption. For 64 bit keys you must enter 10 hex digits into each key box. For 128 bit keys you must enter 26 hex digits into each key box. A hex digit is either a number from 0 to 9 or a letter from A to F. After entering the details click on save settings.

  3. Enable WPA

    To enable WPA on D-Link WBR2310, we need to select the WPA wireless security from security mode list. Now the WPA settings page will appear. Here we need to enter the Passphrase (Security key).
    WPA

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How to Change Linksys Router Wireless Channel

Changing wireless channel is an important step mentioned in many WiFi connectivity tutorials in this blog. This article is specifically to explain how to do it on an Access Point or a router. Here the steps mentioned are based on a popular router model from Linksys. Linksys is one of the popular SOHO product manufacturers. Though the steps provided in this tutorial are based on a specific model, you can use the same procedure with other vendor products. It is because this concept is same for every WiFi products.


Wireless Channels To Pick

Before changing the current channel selected, you must understand, only three of them are worth to use. It is because others are affected with interference. The channels which are free from interference are listed below.

  • 1

  • 6

  • 11
These three are free from interference. If you don't want to enter it manually, you can choose automatic instead of specifying the number. For modern devices, automatic selection is recommended.

How to Change WiFi Channel of an AP

If you want to change the currently selected wireless channel, I recommend you to follow the instructions provided here. Here I show instructions for a specific vendor product but the procedure is same for all routers.
  1. Log on to Linksys Setup Page

    Type the logon IP address on the address bar of web browser and press enter. For linksys router it is 192.168.1.1 Now you will be prompted to enter the username and password to continue the process. For a brand new linksys router there is no user name and the password is "admin". In case if you have set a different username and password, you must use that information. If you cannot recollect them, use the instructions provided in the link below.
    How to Recover Lost Password

  2. Click on wireless tab and look for basic wireless settings. You can see the wireless channel there. You can change the current one with other two allowed ( channel 1 ,6 or 11). For example if 1 is currently selected, you may change it with 6 or 11. As I explained before, if you do not want to enter this detail by yourself, you can choose auto selection option. If you have selected auto select, device will pick the most interference free channel.

  3. Save settings and log off

    Now you have successfully changed the wireless channel of your WiFi router.

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No SSID Broadcast From Wireless Router & Access Point

Yesterday night I faced a strange issue related to wireless connectivity on my laptop. I could not find SSID from my router. First I thought it was my Laptop wireless adapter's issue as there are no other networks. My desktop does not have wireless adapter so I have no other option to verify whether it is the router issue or my laptop issue. Today morning I went to one of my friends house and checked whether my laptop is able to see WiFi from his Access Point. Yes, my laptop is seeing it from his Access Point. So it is clear that my laptop adapter is working fine and the culprit is my Wireless Router. The major steps I performed on my router to fix this issue are described below in a systematic order.

Router is Not Broadcasting Signal

Step by step troubleshooting for a Router or Access Point when it is not broadcasting signal.
  1. Check WiFi light

    Check the status of wireless light on the AP. If it is broadcasting WiFi, the light is ON. If it is off, you cannot see WiFi network from AP on your computer because there is no broadcast. In some rare cases, this light may be off even though it is broadcasting signal due to LED issues. Here I assume LED light is fine.

  2. Make sure the SSID broadcast is enabled

    To check this, you need to log on to setup page and check the status of SSID broadcast. You can find this option under wireless tab. If SSID broadcast is disabled, it will not broadcast WiFi.

  3. Power cycle

    It is advised to power cycle Access Point to fix broadcasting issues. To perform this you should power off the device for 30 seconds and after 30 seconds power on it again. When all the lights are steady, check for the issue. If you do not know how to perform it in systematic way, follow the instructions provided in the link below.
    How to Power Cycle an Access Point

  4. Change SSID

    It is advised to change the wireless network name (SSID) and check whether your laptop is receiving signal. You can change the current network name under wireless.

  5. Change wireless channel

    You can change the wireless channel to channel 1 ,6 and 11 depends on the current channel. To learn more about it, visit the link below.
    Change WiFi Channels on Linksys Access Point

  6. Upgrade Firmware

    If the firmware flashed on your Access Point is outdated you may start seeing issues with its working. Updating to latest firmware version can resolve every known issues and bugs in the previous version. It is highly recommended to update the firmware of any networking device with latest version to expect full functionality.

  7. Reset and reconfigure

    If none of the steps provided here are working, you may reset the device to factory default and reconfigure it.

All the steps above mentioned are about how to troubleshoot the router when there is no broadcasting from your WiFi router. What if the real culprit is your laptop and not the router ? In that case you should troubleshoot the laptop instead of router. You can follow the instructions provided in the link below in that case.
My Laptop is Not Getting WiFi Signal and Internet

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Dr.Watson Postmortem Debugger has Encountered a Problem and Need to Close

Yesterday night while working on my computer I saw the error message "Dr.Watson Postmortem Debugger has encountered a Problem and need to close. We are sorry for the inconvenience." My computer froze when I pressed 'don't send report' button. Since I couldn't work anymore, I restarted it but again the same Dr Watson Postmortem Debugger came up with a sorry message. I was unable to do anything on the desktop PC and I started browse on my Laptop. First thing I did was a search using the error message and found many people were facing the same issue. There are different opinions about the error message varies from system error to possible malware attack. While surfing more, I found it was not a malware but a built in Windows debugger program. Microsoft is using Dr Watson Postmortem Debugger to collect error reports from devices which use their Operating systems.


How to Fix Dr.Watson Postmortem Debugger Error Message

As I expected, it is not an essential tool for a user. We can either delete or disable it without affecting the functionality of our computers. So I decided to disable this program to make my desktop PC work again. I tried to log on to my Desktop computer and successfully log on to the Windows account after a few unsuccessful attempts. Then I followed the steps below.


How to disable Dr Watson Postmortem Debugger
  1. Click on start

  2. Click on Run and type drwtsn32 on run window and Click on OK. Now the Dr Watson Postmortem Debugger options window will open. It look like the image below.
    check

  3. Uncheck all the check boxes under options and click OK.

Where Can I read Dr Watson Postmortem Debugger Log Files ?

As I explained before, it is a default unnecessary program installed by Microsoft to collect information regarding software errors or bugs. It keeps a log file which stores all software errors happened and send it to Microsoft. Log file crated by Dr Watson Postmortem Debugger records all kinds of software errors that occurs and to read this log file, you may navigate to following location.

C:\Documents and Settings\All Users\Application Data\Microsoft\DrWatson

It is saved in the name drwtsn32 and can be opened in a notepad. This log file contains Application exception occurred, System Information, Task List etc... We can change the log file path of Dr Watson Postmortem Debugger by accessing it by following the steps below.
  1. Click Start,and go to Run.

  2. Type drwtsn32 on Run and press OK.

    What is

    In this window, you can change current settings including log file location. You can specify a different address for log file if you want to change the current path.

Since it is an error reporting tool from Microsoft, you will get the error message "Dr.Watson Postmortem Debugger has encountered a Problem and need to close. We are sorry for the inconvenience" when a program crash. It is not because of virus infection but a feature (unnecessary though) is doing its duty only in an annoying way. Now let us check some other interesting Microsoft tutorials below.
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Communication between two APIPA computers without DHCP Server

On the last Saturday Me and my friend are trying to connect two computers directly using a USB cable and start communication between these two computers without the help of any external DHCP server. As I mentioned in my previous post we cannot use ordinary USB cable to connect two computers directly. It may burn the USB port.

[ To know more about it please follow the link below.

http://www.corenetworkz.com/2009/10/can-i-connect-two-computers-using-usb.html ]

In this project we avoid using router or any other DHCP servers. As we are not using the Ethernet adapters we cannot set any static IP address. So without the presence of external DHCP server and static IP address our both computers will get APIPA from Windows Operating System.

[ To know more about APIPA please click on the link below.

http://www.corenetworkz.com/2008/02/how-to-resolve-issue-when-ip-getting-is.html ]

So the IP address our computers got was 169.254.X.X range. Fortunately the IP address gained by our computers were in the range 169.254.1.X and it started to communicate with each other.

It is sure that APIPA computers can communicate each other as their subnet mask is 255.255.0.0 (Class B address). So as the subnet rules says the network address of APIPA is 169.254.0.1 and the broadcast address is 169.254.255.255. Any address comes in between these range can communicate each other. Because it is a private IP address we cannot use APIPA to get Internet connection to our computers. For Local networks and Intranet APIPA is enough.


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When to Charge Laptop Battery & Increase Battery life and Efficiency

When it comes to laptop battery charging, there are different opinions about the right way and time to do it. This tutorial explains how to manage a laptop battery with right time to recharge and steps to keep remaining charge more efficiently. Lithium based battery is used for laptops and it is better wait till its charge comes between 20% to 10% to plug it back to power. Most of the experts recommend, never let the battery charge drops below 10% before connecting it back to power supply. In addition to the level of power left, temperature has a major role in the efficiency of  lithium battery.

The better ways to Charge Laptop Battery

Now a days we are using lithium-ion batteries for Laptops and they are having a rapid-charging option. It is important to note that when we start using the Laptop for the first time, it is advised to charge it for a long time (attain 100%). To know the exact time period, better refer the Laptop user manual. Never operate your Laptop at higher as well as lower temperature and keep it in room temperature. So the major points to remember while charging laptop batteries are provided below.
  1. Connect to power when charge falls below 20%

  2. Stop avoiding overheating and better keep in room temperature

  3. For first time use, recharge the battery to 100%


It is better remove the battery from the Laptop if you are not going to use it for a long time. Another important point we need to remember is never short circuit terminals to discharge battery charge. You can configure the time when the power left falls below 20% from power options. To perform it, visit the link below.
How to Change Critical Level And Get Informed


Use Laptop Battery Efficiently

Now we know the right time to connect a laptop back to power. This section covers how to utilize the  battery charge in a better and efficient way. Think of a situation where you are in no position to find a power outlet to connect but wants to continue your work. So the only option left is to manage the existing charge more efficiently. In such a scenario, the following tips will help you.
  1. Turn off Wireless and Bluetooth

    If the WiFi button is on, it will take additional power to scan available wireless networks present in that area. If it fails to find any wireless network, it will continue the scanning. It is same for Bluetooth also. To avoid such a wastage of energy, I recommend you to turn off Wireless button.

  2. Avoid playing computer games

    High end PC games costs too much energy and it not not recommended to play them when you have no chance to find a power supply. Playing games on your Laptop drain laptop battery fast.

  3. Reduce the Laptop Speaker Volume and don't play any movies

  4. Reduce screen brightness

  5. Avoid using external devices like external mouse, DVD drive, USB adapters etc

  6. Avoid using multimedia applications

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Can I connect two Computers using USB cable

There are so many methods to connect two different computers and share data between them. Ethernet cables and wireless (IEE802.11 standards) are the most popular modes to connect two devices. However, you can use USB (Universal Serial Bus) cable to connect two computers and use the same connection to share files between them. Though, for this you must use a special type of cable called Bridged USB cable. If you use normal USB cord to connect two computers, it may damage the ports. This guide explains the difference between bridged and normal USB cables.

Connecting Two PCs Using Bridged USB Cable


The type of Universal Serial Bus cable which is used to connect two computers directly is called Bridged USB cable. It is available in two different standards. They are USB 1.1 and 2.0. The difference of standard is based on the speed of data transfer. In 1.1 version, the data transfer speed is 12 Mbps and that in version 2.0 is 480 Mbps. It is very important to note that no other Universal Serial Bus cords are designed for the purpose of connecting two PCs directly. Using wrong cords may harm the USB ports of your computers.

Modes of working of Bridge Cord

The bridged Universal Serial Bus cord works in two different modes. They are:
  1. Link mode

  2. Network Mode

In link mode, two laptops are connected through the bridged Universal Serial Bus cord and the file sharing is enabled. In network mode multiple PCs are connected and Internet too shared in addition to the file sharing. This is the basic difference between link mode and network mode.

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How to change system date and time in Ubuntu Linux

This week end was very interesting for me as me and my friends established a Local Area Network in their home. They have total six computers and two of them is running on Ubuntu Linux. After establishing the Local Area Network we implemented one propitiatory real time simulation software on this LAN by installing the software on all this computers. But the software works fine with the integrated data of from 5 computers and one computer is not connecting to it or connection rejects. So the techie in our mind got up and we start troubleshoot the issue.

At first we thought the issue is with the compatibility issue of Ubuntu and the software. But the first Ubuntu computer is working fine with the software and in careful analysis it is found that that computer is functioning more efficiently than other Windows based computers. So it is not the issue with Ubuntu. Then we confused what is the actual cause of the issue. Then I just checked the connection manager of the software and the error message was some thing like unpredictable date with many hexa decimal codes. So it has some thing with system date. We went to the non-functional computer and checked the system date. It was the default system date set when they installed Ubuntu in this. So we just set the system date and time with current date and time . The result was great the issue fixed. So here I am presenting steps to change computer date and time in Ubuntu linux when there is no date and time displays on system tray.


How to change system date and time in Ubuntu Linux




To change the system date and time in Ubuntu Linux from Administration is:

1. Click on system

2. Select Administration and go to Time and Date

3. Unlock Time and Date and enter password.

Now you can change the system time and date by changing the default settings there.


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How to Prevent Copying Files to USB Drive From Computer Without Disable USB Port

Today early morning one of my friends called me for an urgent help. He is working as a System Administrator for a small company and wants to disable copying files from working computer to USB drives (pen drives). I told him to disable the USB port and fix the issue. Then he said according to the company policy he cannot disable it. He wants the computer should read files from the USB drive but no file transfer to it from computer hard disk. So in a nutshell he wants to read files from the portable storage drive on his company computers but does not want to copy files from his company computer to the USB drive. He is in a confusion that if it is possible to block writing files to the portable memory storage without prevent the PC from reading it.

I too at first confused with this strange company policy. Then I realize, it is very simple to do. We can enable write protection on USB by GP edit or Registry Edit. If Write Protect is enabled on Universal Serial Bus, computer can read files on portable storage but not able to copy content to them from hard disk. It is very simple to enable write protection on USB Ports from registry.



Prevent copying files to USB drive From Hard Disk

This step tells how to enable write protect on USB port from Windows Registry and prevent computer from copying content to portable memory storage from hard disk. This step doesn't hurt your reading ability and your PC can read files in portable storage without any issues. Steps to disable file transfer from hard disk to portable drive are:
  1. Click on start and go to Run (Press Windows and R button together to open run window).

  2. Type regedit on run window and click OK.

    Now the registry editor will be opened.

  3. Before making any changes to Registry, I recommend you to take a backup of current Registry on your computer.
    How to Backup Current Registry On your Computer

  4. Go to the location.
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies

  5. Create a DWORD value called ‘WriteProtect‘ and set it to 1.

    Now onwards your PC will be able to just read the files from eternal memory drive connected to but the drive can no longer copy content from hard disk.

  6. To disable write protect on USB drives change the DWORD to 0.

This article tells how to enable write protect on USB Port and disable copying files from computer hard disk to USB drive. In case if you want to disable entire Universal Serial Bus ports on your computer from Registry click on the link below.
How to Disable Universal Serial Bus Ports On Your Computer From Registry

There is a registry tweak to fix an error code usually see after updating Windows using live update. To read more about it click on the link below.
Getting Error Code 0x80070424 After Running Windows Live Update

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