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How long does a CMOS battery last?

Asked by bomyne (636points) August 8th, 2014

About three months ago , my computer started displaying weird symptoms. Three long beeps and the computer would refuse to do anything, unless the power plug was pulled out for at least a minute and then it complained over overclocking failure. After a lot of troubleshooting and some head banging, I replaced the battery on the motherboard and all the problems magically went away (Except for a video card problem that popped up last month.)...

Fast forward to today and the same problems are occuring. The computer is spitting out three long beeps and refuses to start unless the power plug is removed for at least a minute, and then it complains about overclocking. (I have never overclocked a computer, by the way)

Is it possible this battery is already dead within three months?

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