Question about Asrock K7S41GX Motherboard

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Mother Will Not Post

When MB is powered on the CPU fan spins and nothing else happens.
I have placed a PCI PC Analyser card which displays the POST CODE and only displays EF.
I have removed everthing from the MB apart from the CPU and reset the BIOS but results are still the same. I have also used a different PSU.
The CPU is a AMD Athlon XP 2500 (Barton).
This is my second MB as the 1st one also gave me the same results.

Please can you help?
Regards
Alan.

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  • Alan Jul 12, 2008

    Hi 8bytes,



    the MB is a ATX (20pin connector) Asrock K7S41GX.



    I am going to try another CPU and will post the results here.

  • Alan Jul 12, 2008

    OK.....I have put a AMD Athlon 1800+ and the MB has posted !



    So the CPU must be shot!



    I have checked the BIOS version and it is the latest for that MB, Version 2.80.

  • James Grady May 11, 2010

    Is the motherboard "AT" or "ATX"?

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Replacing the CPU has resolved the MB not posting.
So, from my findings the other CPU must have been faulty which was bought 2nd hand from ebaY!

Is there a way to test it?

Thanks for all advice,

Posted on Jul 14, 2008

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Your post code EF comes from EF Configuration memory error - can't find memory Derives from AMI BIOS and uses port 80h
The memory failure is normally due to the first bank of ram or a data line
Check to see if your ram is seated properly, that is make sure the ram stick is in all the way down. Your problem is your system can't find RAM


Posted on Jul 13, 2008

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