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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.

Other Computer Booting Issues

  1. Cannot Start My Laptop - Disk Boot Failure

  2. Hard Disk S.M.A.R.T Command Failed

  3. Getting 3 Beeps as Boot Error code and Laptop Failed to Boot

  4. How to Check Frequency Of RAM Installed In Your Laptop

Home

Comments

Mark said…
Thanks it was a nice troubleshooting guide. My computer is now automatically restarting let me follow your guide
Anonymous said…
my pc cant detect any of bios information why and i lost 20g of my space in my hardisk
Siju George said…
Where you were checking BIOS information ?

If you lost 20 GB of harddisk space make sure that there is no bad sector created in your harddisk. You can also connect your hard disk in a different computer as slave and check the available space.
Anonymous said…
I followed all procedures , but my problem of restarting windows exactly after 120 minutes are exist , please guide me .
P.S. : I formatted drivers and reinstalled my windows even I changed CPU and related Fan of my laptop too but the problem not solved.
Please let's know your comments to my email h_faizi2002@yahoo.com

Thanking in earlier advance
Hami
Siju George said…
If you have followed all the steps mentioned this article, I seriously doubt it might be a hardware issue.

Any software related issues can be fixed by a complete format and reinstall of OS. I recommend you to contact a hardware expert in your area to check the reason for your auto shutdown issue.
Honey said…
My system restart when i install office 2007 and some times it restart
when i install corel draw and even if open many windows of internet explorer it restart.
kindly tell me if u have a solution of this.
Thanks
Siju George said…
Hi Honey,

Have you tried the steps mentioned in the article ?
Anonymous said…
i tried all your step im checking ftware remove latest software nothing happend.
checking hardware-connecting proper. but nothing change.
disable automatic restart but still my computer is restart.so
Siju George said…
Have you checked any possible virus infection ? If you tried all the steps in the given article and the issue persists, I recommend you to consult a hardware technician to resolve the issue.
Anonymous said…
hello sir,my computer automatically restarts when i open or scan using my escan antivirus on some specific folders and many a times,my computer hangs.nothing can be done after it ijust then press restart button
Siju George said…
May I know which AntiVirus you are using ? What type of files (video, exe files, images etc)causing your AntiVirus hang while scanning ?
mani said…
hello sir,my pc restarts automatically when it starts.my avg antivirus shows some virus,then i uninstall this avg s/w.But now when i install this avg s/w(under running process)not completely installed-my pc restarts again n again.And when next time pc is open avg shows some virus in any directory,whether it is not completely installed.
What to do?
Siju George said…
Hi Mani,

I understand from your message that your previously installed AntiVirus showed some virus alerts and was restarting your computer. You uninstalled it and now facing issues with installing AntiVirus again.

Reason:

You cannot successfully install AntiVirus software in a virus infected computer. So better you remove the infection and then try to install a fresh AntiVirus.
Anonymous said…
I have a pc with intel board and due to over heat in intel chipset my pc is restaring automatically. pls suggest me how to solve this problem.
Siju George said…
If your computer is facing over heat issues, verify there is enough air circulation in the cabinet. I recommend you to follow the link below to learn more about this issue.

Protect computer from overheating
Ashok M said…
Damm virus infection on my system entirely ruined my computer. It was restarting without giving any clue. I formatted the hard drive to remove the virus infection. Now it seems working fine.
Alam said…
Thanks Now I know why my computer is restarting without warning.
Mallesh said…
Really helpful tip dear, Thank you so much
You Can Try this for help
http://techhelp-pc.us
For Free Support call on :1-855-639-0999
Anonymous said…
replace the cpu
Hi,
I have did this step and changed OS twice.Tried windows 7 and 8. also I have reconnected everything but still I am facing automatic restart issue could you please help me to fix
Alex George said…
Hi Hari,

Which all steps you have done?

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