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Ian_Grimes
new user
Reg'd: Sun
Posts: 6
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Every time I start my computer it stops at the BIOS screen with the following message:
CMOS Checksum Bad
CMOS Date/Time Not Set
Press F1 to run SETUP
press F2 to load default values and continue.
I have reset Date/Time using F1 method and also reset it by right clicking the clock in the task bar. But next I go to use the PC it stops again at the BIOS screen with the same message and the clock has slipped back.
Can someone help please and tell me what is happening and how do I correct it?
Thanks in advance. IanG
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bobnemesis
regular
Reg'd: Fri
Posts: 363
Loc: North Wales
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This checksum error usually points to your CMOS battery on the motherboard being old and worn out, or faulty.
Try replacing that first.
--------------------
As I lay in bed gazing at the night sky, dumbstruck by the awesome beauty of the heavens. I couldn't help but ask myself.....Where the hell has my tent gone ??
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NotMyName
regular
Reg'd: Tue
Posts: 154
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Wow, this is the first time i've ever been able to help in a help request  The exact same thing happened to me too.
To get one of them batteries first you ned to find out what kind you need, then buy one (or a pack, though they last years, so one should be enough) from somewhere like here: http://www.directfoto.co.uk/shop/category/Button-Cells-Silver-Oxide.aspx
I got the one I needed for 99p with no postage and packing!
If you know how to, check what type of motherboard you have (I used a programme called 'PC Wizard' to tell me all that sort of stuff, saves having to take my PC apart to see what is inside it, no idea how it knows what you have though!).
Then do a google search based bit of research and see what type of CMOS battery you need based on the type of motherboard you have, then you are ready to go shopping at the link I suggested 
Hope that helps and that.
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Ian_Grimes
new user
Reg'd: Sun
Posts: 6
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Many thanks for your help
Regards Ian
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Ian_Grimes
new user
Reg'd: Sun
Posts: 6
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Thanks for your suggestion - I will follow it through. Regards Ian
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