Cmos Checksum Bad. The CMOS Checksum Bad Error is an error that occurs when the CMOS values turn out to be incorrect. Hi, My computer is giving this error in the BIOS: CMOS Checksum Bad.
When a CMOS Checksum error occurs during system startup, it could mean that the system has been restored to default factory settings.
Each computer usually deals with the CMOS Checksum Bad Error differently.
I tried replacing the CMOS battery with a new one but it didn't solve the problem. The CMOS Checksum Bad Error is an error that occurs when the CMOS values turn out to be incorrect. The CMOS contains data related to BIOS and may have been.