A user reports that, despite manually changing the date and time on a computer, the changes always revert after the computer is turned off for a period of time. Which of the following should the…

The correct answer is B. CMOS battery. The CMOS battery powers the real-time clock (RTC) on the motherboard, which maintains the date and time when the computer is turned off. If the battery fails, the system will lose date and time settings, reverting to defaults on restart.

Submitted by skyler.x· Mar 30, 2026Hardware

Question

A user reports that, despite manually changing the date and time on a computer, the changes always revert after the computer is turned off for a period of time. Which of the following should the technician consider first?

Options

AOS updates
BCMOS battery
CNTP server
DRAM

How the community answered

(32 responses)

A
3% (1)
B
78% (25)
C
6% (2)
D
13% (4)

Explanation

The CMOS battery powers the real-time clock (RTC) on the motherboard, which maintains the date and time when the computer is turned off. If the battery fails, the system will lose date and time settings, reverting to defaults on restart.

Topics

#CMOS battery#System time#Hardware troubleshooting

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