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CMOS PROBLEM

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Sometimes when I start windows 98,
I get the message"CMOS checksumbad".As
I do not know what to do,I go to BIOS,
click"set optimum conditions"and quit.
Please let me know the reason and how
to rectify the fault.

11 replies

by queen1

The most common cause of this problem is the CMOS battery, which can cause erratic behavior if it is poorly connected or weak. It is also possible for other hardware or software problems to corrupt the CMOS memory, but this is unusual.Hope this helps!!

by dmiles

Try replacing the battery and then,open the CMOS control panel and select save and exit.
If you have mismatched memory this will cause the error.
Have you checked your keyboard on another system to see if the keyboard is good,it will cause a errorwhen it is not seated in the socket plug tightly
Try flashing the BIOS,this may clear up your problem,follow the instructions.

by grump

Having been servicing PC's for the past 15+ years and having seen many, many strange problems in the PC world I only have two suggestions.. FIRST change the CMOS battery , most of the new system all use the same type of button battery and will not be hard to find. Most all computer service and component places carry the battery including ... "RADIO SHACK"...

Second .. After changing the battery your next course of action is to check your AC circut .. Make sure that you are connected to a gounded circuit.. The power cord on you PC has 3 prongs.. the round prong is the ground... anyway what you need to try next is replacing the power supply in the computer.. If it is a common type power supply used by most of the PC MFG's you will have no problem finding a replacement.. DO NOT THROW out the one you are replacing, Keep it for a spare.. Cost of PC today about 600 - 800 $ vers 6,000 to 8,000 in the old days.. Where is the QUALITY?

This is not the exact answer you wanted but you muststart somewhere ... THE BATTERY first..

Good Luck!

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