System date

  scarecrow-bill 14:30 12 Jan 2010

I had a problem today my system would not start.
It would only boot to a black screen.
I check my BIOS setting and found my system date had changed to:12 JANUARY 1980
After changing back all seems fine.
I am just a little confused as to what would cause this.

  OTT_Buzzard 14:40 12 Jan 2010

CMOS battery on its way out would cause it, or a hard reset of the BIOS. If it happens again, or if your system is slowly losing time then change the CMOS battery.

  canarieslover 14:46 12 Jan 2010

I agree with OTT_Buzzard that the most likely cause is CMOS battery. Cost of around £2 to replace and about 5 minutes work if it is a desktop computer.

  scarecrow-bill 14:54 12 Jan 2010

thanks for answers
It's not a desktop though its a netbook about 2 months old

  OTT_Buzzard 15:05 12 Jan 2010

If it happens again, return it to the shop where you got it for a warranty claim.

  lotvic 16:36 12 Jan 2010

Yep agree it's prob CMOS battery.
(am posting this at 16:35 to see if it jumps above Technotiger's post - just for fun)

  Technotiger 16:37 12 Jan 2010

Could still be, and probably is, the CMOS Battery needing replacing.

canarieslover - just as a matter of interest a pack of 5 CMOS batteries, is just £1 in a Pound Shop!

  lotvic 16:37 12 Jan 2010

Yep it jumped above :)

  Technotiger 17:06 12 Jan 2010

Oi, get in the queue ... LoL

  scarecrow-bill 23:24 12 Jan 2010

Thank you all
But still puzzled!
I leave my system runing 24/7 only restarted because of system errors.
I thought the CMOS BAT was only used when no other power was available.

  canarieslover 10:11 14 Jan 2010

Try another restart and see if it happens again. If it does then you may well have a motherboard fault that is resetting the BIOS in the same way as a dead battery would. Certainly would take it back under warranty if that was the case.

This thread is now locked and can not be replied to.

Elsewhere on IDG sites

Huawei MateBook X Pro review

8 digital brands that designed custom typefaces to save millions

How to speed up a slow Mac

Comment résoudre des problèmes d’impressions ?