Andrew has a personal computer. One morning, he starts his computer and finds the following error message: "CMOS checksum failure." What are the most likely causes of this error? Each correct Answer r

An outdated BIOS may cause compatibility issues or lack new features, but it does not directly lead to a CMOS checksum failure, which is related to the integrity of stored settings.

The CMOS battery powers the complementary metal-oxide-semiconductor (CMOS) chip, which retains the BIOS settings (like date, time, and boot order) even when the computer is off. If this battery fails, the settings are lost, leading to a checksum error upon startup as the system detects discrepancies.

The CMOS chip itself is responsible for storing the BIOS configuration data. If this chip becomes faulty or corrupted, it cannot reliably store or retrieve the settings, which would cause a checksum mismatch and trigger the error message.

The CMOS battery is a power source for the CMOS chip and does not store software or host viruses; therefore, it cannot be infected.