error message

[Guest]

Every time I boot up I get a message saying my computer clock is at the wrong
time , my virus programme needs updating and press f1 to boot up. I replaced
the cmos battery a few months ago and I had no problems then I suddenly
started to get the same problem again.

 

[Bob I]

Perhaps the battery was on the store shelf a long time. Try replacing it
again. If this happens again after a few months there may be a problem
with the motherboard.