Bios updating error code
If the battery caused the CMOS Checksum Bad Error, the problem should be solved.
The BIOS May Have Been Updated If the BIOS was recently updated, the CMOS settings may have reset.
Nevertheless, after few days of search and several reattempts, I was able to successfully install Windows 10 on my Windows 7 running PC by fixing we couldn’t install Windows 10 0XC190010 – 0x20017 error.
If a virus has updated the BIOS settings, run a virus scan and make sure that the BIOS settings are back to the default.
There are usually three main reasons that a CMOS Checksum Bad Error occurs.
They include: The CMOS Checksum Bad Error can be fixed easily by following the listed steps carefully.
There are very few reasons for the CMOS Checksum Bad Error, hence they can be handled effectively.
A checksum is computed as an error detecting code to guard the BIOS settings stored in the CMOS memory.
This usually entails going into the Start Menu and clicking Turn Off Computer/ Shut Down.