CMOS Checksum Error. HELP!!!

Soldato
Joined
7 Nov 2006
Posts
5,586
Hi

I have an Abit Fatality F-190HD motherboard paired with an E2140 and Geil 2GB (2x1Gb) Ram. The computer works fine when its plugged in at the mains but not "On" (kind of like on standby).

But when i switch it Off at the mains (so there is ZERO power going to it at all) and then turn turn it On at the mains and press the "on" button i get a "CMOS Checksum Error" on the first screen and i have to go into the BIOS and load all my settings again or settle for the default settings!

This only happens when there is no power at all going to the PC. Once i've reloaded my settings in the BIOS it works fine and i can turn the PC off and ON and it will work fine.Its just when its off at the mains that i get this problem.

After doing some research, im under the impression that my CMOS battery is on the way out and thats why the settings dont get saved. Is this correct?

Will clearing the CMOS help or is it defo the battery that i need to replace?
 

RJC

RJC

Don
Joined
29 May 2005
Posts
28,920
Location
Kent
Yep, I would say that your battery is on it's way out.
Do you have a spare board you can borrow a battery from.
 
Associate
Joined
25 Oct 2006
Posts
1,583
Location
Skegness
The battery's flat. The pc is actually 'clearing cmos' itself everytime you disconnect the mains as there's no battery life left to store your settings.
You can buy a battery at any big supermarket, dont need a specialist computer store. Take the old battery out as it's dead anyway to check the number (most likely cr2032) so as you get the right replacement.
 
Soldato
Joined
7 Nov 2006
Posts
5,586
The battery's flat. The pc is actually 'clearing cmos' itself everytime you disconnect the mains as there's no battery life left to store your settings.
You can buy a battery at any big supermarket, dont need a specialist computer store. Take the old battery out as it's dead anyway to check the number (most likely cr2032) so as you get the right replacement.

Yep its a CR2032 and i've ordered one online for £1.00!

How do i take the old battery out? It looks like its bolted on to the mobo?

I thikn in the meantime im better off at not turning the power off at the mains.
 
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