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Solve : CMOS/GPNV checksum bad?

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Hi,
I have two DIMMs of 512 MB DDR each. i purchased the second one some days ago. I installed the new RAM and it worked fine. Had no problems at that time.

I also purchased new SATA Seagate HDD of 160 GB about 3 months ago. But it has got bad sectors so i had removed it, and, i have been working with my 8 GB old Seagate HDD. The HDD is another issue for which i will POST another topic.

So 2 days ago, i had to take some data out of my bad HDD. So i cleaned my PC of some dust(I do that in few days), and then plugged in, the bad SATA HDD. When i powered up, it gave the same error as it is giving now i.e. when i power up the PC, it says:

Maximum memory performance is achieved with matched DIMMs.
The installed amount of memory in channel A is not equal to the amount of(further message was truncated, couldnt see what was written ahead).
Press any key to continue..

When i PRESSED a key, then it says:
CMOS/GPNV checksum bad
CMOS Date/Time not set

Then i have to get into BIOS, set the date and time and also the boot order, and save the changes. And then the PC boots up fine.
But everytime i shutdown and start the PC, again it starts showing the same message. I have reseated the DIMMs too.

Why is this happening? About 8 MB i think goes for the video memory, so it shows 1016 MB of RAM on startup. Uptill now the PC was working fine. Why the error now? I have also removed the bad HDD.

Looking forward to answers.

My PC is assembled, with Intel P-IV processor, 1024 MB DDR RAM (512 MB * 2).

Thanks,

AnupamDate time settings lost usually means that your CMOS battery is dead. Try replacing it and see what happens (It may even help with the other error) Quote from: hmar on July 24, 2008, 06:52:56 AM

Date time settings lost usually means that your CMOS battery is dead. Try replacing it and see what happens (It may even help with the other error)

If the new battery doesn't correct the other issue, down load memtest86, burn it to CD, boot from it and run the test for at least 2 hours on each module separately. If they pass, run for at least 4 hours with both modules installed.

http://www.memtest.org/Hi, sorry for the late reply... was having problems with my internet connection.

Well, the problem is solved. I reseated the DIMMs, and the PC is booting up fine now. No CMOS message again after that. So, all fine now, and the battery still lives .. yay!

Thanks again for the help and replies.

AnupamThanks for posting your solution and Good Luck!


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