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Old 01-25-2009, 10:56 AM   #1 (permalink)
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Default Unknown Processor Revision

I just bought an MSI K9N SLI motherboard but when I turn on my computer I receive this error at startup:

CMOS Checksum Bad
******* Warning Unknown Processor Revision *******
The processor(s) installed in your system are of an unknown revision.
Please contact your BIOS vendor for appropriate updates.
Fatal Error... System Halted.


I have checked on MSI's website and it says that my AMD 5200 processor is compatible with the motherboard.

Code:
Processor: AMD 5200
Motherboard: MSI K9N SLI
GPU: Nvidia 8800gts
PSU: 400w
Hard Drive 1: Hitachi 160gb IDE
Hard Drive 2: Western Digital 320gb SATA
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Old 01-25-2009, 01:27 PM   #2 (permalink)
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Default Re: Unknown Processor Revision

You may need to flash the BIOS although chances are it's a bad chip. Do you have any other AM2 cpus you can throw at it?
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Old 01-25-2009, 01:29 PM   #3 (permalink)
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Default Re: Unknown Processor Revision

Quote:
Originally Posted by Nick View Post
You may need to flash the BIOS although chances are it's a bad chip. Do you have any other AM2 cpus you can throw at it?
My brothers. I'll use his when he's at school, if it works I'll update the BIOS using the MSI application and see if the 5200 will work afterwards.
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Old 01-25-2009, 01:34 PM   #4 (permalink)
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Default Re: Unknown Processor Revision

Hello,

Also, have you tried resetting the BIOS?
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Old 01-25-2009, 07:12 PM   #5 (permalink)
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Default Re: Unknown Processor Revision

I have a model VERY similar to yours, as long as it isnt one of them odd ball ones and it is just a old school 5200 it will work. You may also have to flash the bios to support dual core, I know my bios revision didn't when I first got it.
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