How to Reset or Bypass Forgotten BIOS Password

It is important to prevent others from accessing BIOS(Basic Input Output System) settings on a computer if you want to make it secure. By settings a password for login to BIOS, we can add one more layer of security for our PC. However, one possible issue is you may forget the password you set and prevented from accessing the Basic Input Output System settings. This tutorial explains how to reset BIOS password configured on a computer. There are three methods to reset the data you set for it and they are given below.
  1. Using BIOS backdoor passwords set by the manufacturer

  2. Using BIOS password breakers (Third-party Software )

  3. Hardware Reset

BIOS Backdoor Passwords

This is the easiest method to reset Basic Input/Output System information set on a computer. You can use the dummy or preset backdoor login code provided by manufacturers to bypass the BIOS login code you set on your computer. It is important to know that, you must be patient enough to find the correct backdoor code suited for your PC. One of my earlier posts has a huge list of such information and I hope you will find it helpful. To see a list of backdoor details, visit the link below.
Common Basic Input/Output System Default Backdoor Code Set by Manufacturers

Third Party Tools to Break BIOS Password

If the first method failed, you can use reputed third party software tools to break the password you set. Here you can see a list of widely used tools to break Basic Input/Output System password of any models of computers.





Hardware Reset to Bypass BIOS Password

The one of the good and dirty way to reset Basic Input/Output System login is hardware reset. To perform a hardware reset, follow the steps below.
  • Power off your PC

  • Open Computer cabinet

  • Disconnect CMOS battery from the motherboard

  • Wait at least one minute and reconnect the CMOS battery

  • Reboot your computer to login BIOS
Basic Input/Output System information is stored in CMOS memory and when the power to CMOS is disconnected, stored information will be erased. So on next system boot, BIOS will not ask your password. So be happy because forgotten BIOS password cannot deny your entry to Basic Input/Output System settings on your PC anymore.

Further Readings
  1. How to Reset Current Basic Input/Output System Configuration On My Laptop?

  2. Compare the Features of USB 3.0 and USB 2.0 Technologies

  3. How to Check Laptop Memory Problems Using Windows Memory Diagnostics Tool

  4. How to Hide Hard drive From My Computer Drive List


  1. A. By Using the Motherboard Jumper:

    In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. In this case we use another method.

    Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. The location of this jumper varies depending upon the motherboard brand. You should read your motherboard manual to check its location. If you don't have the manual then look for the jumpers near the CMOS battery. Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.

    When you find the jumper, look carefully. There will be 3 pins and the jumper will be joining the center pin to either left or right pin. What you need to do, is remove the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to left pin, then remove it and join center pin to right pin. Now wait for a few seconds and then again remove the jumper and join the center pin to left pin.

    Make sure to turn the PC off before opening the cabinet and resetting the jumper.

    B. By Using Software:

    I have found that BIOS/CMOS Password Recovery Tool is the most effective.:
    BIOS/CMOS Password Recovery Tool is a program that works instantly to remove any lost or forgotten BIOS/CMOS password. Simply boot your PC to DOS and execute the program, and get access to forgotten BIOS/CMOS passwords in just seconds

    BIOS/CMOS Password Recovery Tool Service:

  2. Thank you Rob for your jumber tips to reset CMOS settings.

  3. I got my Dell bios master password and Hard Drive (HDD) master password here. They also do this for HP, Compaq, Fujitsu, Acer, Advent, ASUS, Gateway, Sony and Samsung laptops and desktops.
    Just go to
    Send your Dell model and service tag and they will email back your bios master password and or HDD master password for your Dell computer. The Master Password will delete all Bios passwords giving you access to your locked computer again.


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