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cmos checksum error

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by anthonyedgar

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My friends computer has a cmos checksum error is thier a way of fixing this and how would i go about it.

As soon as the computer is switch on the error comes up the keyboard is inaccesable any help gratfully recived

3 replies

by tg2

More info is needed about the computer system.

System age
Bios type (phoenix/award/amd)
Motherboard (brand & model)
Keyboard type

Some people may be going "keyboard?" but you have to remember that USB keyboards are increasing out there, and that most bios's pre 2007/2006 didn't default to USB Legacy Enabled...

There is always the possibility that the only problem is that the battery on board has gone bad/will no longer charge.

If you are using a USB keyboard, get a PS2 keyboard and see if the system responds with that.. if this is a PS2 keyboard, its possible that the bios is really fried and it may be unrealistic to replace the system bios as many are surface mounded now, and not user replaceable.

by weed_burner

I am also getting same problem from a 1999
ga-71x
motherboard, makes it through ram count & hd detection but says
CMOS Checksum Error - Default loaded

Press F1 to continue or DEL for Setup

PS2 Keyboard is unresponsive at this point and impossible to enter setup.
Have tried 3 dif keyboards(all ps2), 2 different cpus, changed ram from 128 to 64 chip, tried dif power supply
Changed battery with working one from another computer
All results are same...
CHECKSUM Error
press F1 or DEL
no keyboard response.
Anyone else have this prob or know how to fix it?

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