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Problem with mainboard?

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Joined: 04 Jun 2010
Posts: 2

PostPosted: Fri Jun 04, 2010 11:42 am    Post subject: Problem with mainboard? Reply with quote


Recently I came home and turned my computer on to find two blank screens. I opened the case and the POST Code was showing as C1 (occasionally flickering to C0 then back to C1 - I assume it is retrying the cycle); having checked in the manual it seems this is related to memory.

I have 2 sticks of memory and 4 slots. Having tried each individual stick in each of the slots, the C1 error was still displayed. I thought it would be unusual for both sticks to fail at once so I tried detaching other devices.

I found that when I detach the graphics card, the POST completes successfully and finishes with FF, which means it's attempting to boot.

If I try the graphics card in the other PCI-E slot, the POST goes through until 5d, which should be audio related. Again, if I remove the graphics card the POST completes successfully. I have tried the card in another mahcine, and it works fine.

As the graphics card works in another machine and the POST completes without it, does this mean there is likely to be a fault with the mainboard?

Any help/suggestions would be greatly appreciated.

ABIT AN9 32x fatal1ty MBoard
2 x 2048mb Corsair XMS2 DDR2 PC6400 RAM
ATI X1800XT 512mb Graphics Card
Arctic Cooling AX-500F (500w) PSU

Let me know if further detail is required. Thanks.
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Joined: 23 Apr 2010
Posts: 105
Location: Malkin Tower

PostPosted: Fri Jun 04, 2010 6:01 pm    Post subject: Reply with quote

1) dont believe anything you get from POST error codes. The results they give are usually totally arbitrary. I've got a POST diagnosis card and I gave up using it ages ago. I learnt a long time ago that its better to check things empirically
2) sounds to me like you've either got a faulty PCI-E bus on the motherboard, or else the power supply is intermittent. I'd try switching the PSU for another, make sure its got enough power to supply the m/b, graphcis card and peripherals. Check the manufacturers specs to see the minimum required
if that fails then replace the board. Most boards now come with a several-year warranty: discuss your situation with the supplier and see what they say

PS - you don't say what CPU you have in that machine, but at face value 500W seems possibly a bit on the low side
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Joined: 04 Jun 2010
Posts: 2

PostPosted: Sat Jun 05, 2010 2:48 pm    Post subject: Thanks Reply with quote

Thanks for the reply,

I have ordered a new case & PSU; if that doesn't sort it I'll get a new motherboard / CPU / RAM. It's probably time for an upgrade anyway Very Happy
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PostPosted: Fri Dec 02, 2016 1:24 am    Post subject: hhcg Reply with quote

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