CMOS Failure Symptoms:

Incorrect computer date and time settings. (This is the earliest sign that lets you know when the time is right to get a new CMOS battery.).
The computer occasionally turns off or refuses to start.
The laptop could not find a printer.
Malfunctioning of the mouse.
Problems launching a program.
Beeping sound from the computer.


Compatibility :

Dell XPS - 1318, M1330, M1340

P/N:  23.22056.001

Package : 1 piece of CMOS battery