How to Fix BIOS Checksum Error
- 1). Annotate the BIOS settings of your computer for use after replacing the CMOS battery. To access the computer's BIOS, restart your computer and press the "F 10" function key during the restarting process. The BIOS configuration panel will then open and you can write the specific settings for your computer down to use for BIOS configuration after replacing the battery.
- 2). Turn off your computer and remove the power cable and if installed, battery. Remove the computer hatch which will vary in method depending on the brand and model of computer you have.
- 3). Locate the CMOS battery on the motherboard. The more popular model of CMOS battery used is annotated with a CR2032 label and is a round shaped button. Firmly remove the CMOS battery from the motherboard.
- 4). Align the new CMOS battery with the positive side orientated towards you and insert into the mother board.
- 5). Restore the power cables to your computer and restart the PC. During the restarting process, depress the "F10" function key to enter the BIOS setup screen.
- 6). Update the date in the BIOS and change the BIOS settings to match those you recorded in step one. After the settings are updated, select the "Save and Quit" menu option and restart your computer to finish the CMOS battery replacement.
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