Removing BIOS password can be done by removing CMOS battery, using jumper or supporting software. To do it quickly, please see detailed instructions below.
 

Method 1: Remove the CMOS battery

This is a relatively simple way. Your job is to open the computer case and find the CMOS battery and remove it. Because this method requires opening and removing the CMOS battery, it is only suitable for desktop users, not laptop users.

The first thing you need to do is to remove all the power cables and then open the case. Next, find the CMOS battery on the motherboard and remove it for about 5 minutes and then reinstall it.

Method 2: Use CMOS De-Animator software

This method is suitable for laptop users, because it can be done directly on Windows. And removing BIOS password only takes a few clicks. First, you need to download CMOS De-Animator software here.

After downloading, installing and opening the software, the following interface will appear:

Just click on Clear CMOS and 256-byte CMOS and then click Proceed .

Method 3: Using Command Prompt

Step 1: Press Windows + R to open the Run window, then type cmd in it and press Enter to open Command Prompt.

Step 2: Type each command below and press Enter:

DEBUG
- O 70 10
- O 71 10
- Q

Note: 64-bit versions of Windows 10, 8, and 7 do not support the DEBUG command.

You can download the DOSBox software and run debug.exe on your computer.

Step 1: Install DOSBox on your computer, note do not install on drive C.

To download and install DOSBox, visit here.

Step 2: Add debug.exe to E:/TASM.

Step 3: Find the drive where you want to install DOSBox, then double-click on the DOSBox 0.74 Options.bat file. The file will open in Notepad, copy the code below and paste it at the end of the file:

MOUNT CE:TASM
C:
debug

Step 4: Run DOSBox to run the remaining commands.

Step 5: Finally restart your computer, now the password, BIOS pass is no longer there.

Method 4: Reset using CMOS Jumper

On your computer's motherboard, find the clear or password jumper, BIOS pass, or DIP switch and change it to the new position. This jumper is usually labeled CLEAR, CLEAR CMOS, JCMOS1, CLR, CLRPWD, PASSWD, PASSWORD, PSWD, or PWD. To clear the BIOS password, remove the jumper from its current position and put it in the new position.

Method 5: Contact the manufacturer

If you have tried everything but still cannot do it, the last resort is to try contacting the computer or motherboard manufacturer for detailed instructions.

The BIOS password will be cleared and all settings will be returned to default. Thanks to that, you can easily customize hardware parameters and settings for your computer.

Kareem Winters

Update 05 March 2025