Can anyone help, not very good with computers! My computer clock (in the bottom right hand corner) has started to lose time and changes date/year, came on today and found it to be 31 December 02! have Windows xp SP2
In my experience, once every two years is sufficient. CMOS batteries are typically good for three to five years, so this schedule still allows for a considerable margin of safety. If you follow this schedule, you should minimize system down time. How do I know when my battery is truly dead and not some other malfunction? This one is pretty easy. If your system is losing settings, or if your BIOS clock has the wrong time after you have set it, then your CMOS battery needs to be replaced.