My Mum moved house last year (Sept) and her desktop PC has been out of
use since then (about 4 - 5 months). PC is about 3 1/2 years old IIRC.

Got it back up and running yesterday and when it booted up it came it
with the BIOS setup screen and the date had been reset to something like
2002. after saving the CMOS settings and resetting the date it would
boot up, and did so ok 2-3 more times while I was there.

today she turned it on and it came up with the BIOS screen again.

Am I right in assuming the CMOS battery is lacking in charge? Do these
things recharge when it's turned on, or will it more likely need
replacing?
--
Chris French, Leeds