Important Note: Not all motherboards have removable CMOS batteries. The CMOS battery provides power used to save the BIOS settings – this is how your computer knows how much time has passed even when it’s been powered-off for a while – so removing the battery will remove the source of power and clear the settings. If your motherboard does not have a CLEAR CMOS jumper, you can often clear its CMOS settings by removing the CMOS battery and replacing it. Image Credit: Eden Richardson Reseat the CMOS Battery Set the jumper to the “clear” position, power on your computer, turn it off again, set the jumper to the original position – and you’re done. Ensure you’re grounded so you don’t damage your motherboard with static electricity before touching it. Open the computer’s case and locate the jumper named something like CLEAR CMOS, CLEAR, CLR CMOS, PASSWORD, or CLR PWD – it will often be near the CMOS battery mentioned below. Flip the computer’s power switch to off to ensure it’s not receiving any power. However, the basic process is fairly similar on all computers. You should consult the manual for more detailed instructions if you want to use the motherboard jumper. The exact location of the jumper can be found in the motherboard’s (or computer’s) manual. This is particularly useful if the BIOS is password-protected and you don’t know the password. Many motherboards contain a jumper that can be used to clear CMOS settings if your BIOS is not accessible. Your BIOS will now use its default settings – if you’ve changed any BIOS settings in the past, you’ll have to change them again. To wipe everything from your computer, click on the Remove everything option. Once it’s in the Recovery window, click on the Get Started button.
HOW TO WIPE A COMPUTER CLEAN FROM BIOS UPDATE
In the Update & Settings window, on the left-side, click on Recovery. Select it with your arrow keys, press Enter, and confirm the operation. How do I wipe my hard drive clean and reinstall Windows In the Settings window, scroll down and click on Update & Security.