system clock always falls behind

My clock on my computer always falls behind. Each day it ends up like 2 or 3 minutes slow. I reset it every so often, but it doesn't seem to help. Any ideas? Is it a configuration problem?
Van HalenAsked:
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kev45Connect With a Mentor Commented:
Replace your battery.  Every computer has a battery inside it to supply energy to the clock while the computer's off and also to help boot up the computer.  If your clock is not keeping time correctly, it means that your battery is low.
Van HalenAuthor Commented:
where can i get a battery and how much $$$?
Go to your nearest computer store and tell them to problem.  I don't know how much, but these aren't your everyday AAA batteries.
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