A technician has replaced the CMOS battery on the motherboard. Which of the following is the reason why the technician did this?

The correct answer is D. Clock settings are not being maintained. The CMOS battery (typically a CR2032 coin cell) provides power to the CMOS chip on the motherboard, which stores the real-time clock (RTC) and BIOS/UEFI configuration settings. When the battery dies or weakens, the system loses its ability to maintain the date and time between…

Hardware

Question

Options

ABIOS password was set incorrectly
BSystem would not shut down properly
CVideo card was under powered
DClock settings are not being maintained

How the community answered

(40 responses)

A
3% (1)
C
5% (2)
D
93% (37)

Explanation

The CMOS battery (typically a CR2032 coin cell) provides power to the CMOS chip on the motherboard, which stores the real-time clock (RTC) and BIOS/UEFI configuration settings. When the battery dies or weakens, the system loses its ability to maintain the date and time between power cycles - the clock resets to a default date (often January 1, 1980 or similar) every time the PC is unplugged or powered off. This is the classic, primary symptom of a failed CMOS battery. A BIOS password issue would be resolved by clearing the CMOS, not replacing the battery specifically. Shutdown problems and video card power issues are unrelated to the CMOS battery.

Topics

#CMOS battery#BIOS settings#system clock#motherboard

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