Unlock a computer bios?

Take out the CMOS battery, which is on the inside of the computer on the mother board. Wait for 20-30 seconds (less time may be needed, but the exact time varies). This is normally a button battery. Put the battery back, boot, and there should be no more BIOS password.

Try entering random strings in the password field for some couple of times until a password key is displayed. Take this key code and:

• Go to https://bios-pw.org/
• Key in the key code that you have in the input field and click on Get password button
• A list of generated passwords will be displayed depending on the model of your computer.
• So select your matching password and set it to unlock BIOS.

PS: Save it somewhere for further usage, otherwise, retry the above steps in case you got to unlock BIOS again.

If you know the brand of the motherboard, you can find the right software to reset it. I had used it long time ago. However, you may need to boot it from A: drive if there is any :-) , otherwise you may use a CD drive. Another way is to short the clear CMOS jumper on the motherboard itself if one is present.

Besides, If you enter the wrong password a few times on a laptop, it will be locked with a message something like a “System Disabled” or “Password check failed. System Halted” message with some numbers under the message. Power off and on the computer try again and do not forget to write the numbers down. Then, get BIOS Master Password Generator and use the number you noted before and try the passwords created for you. Depending your laptop model press Enter or Ctrl+Enter after entering the code. good luck