Adding Graphics Card into System causes immediate power-down and no post/error code

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Lyuokdea

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Mar 3, 2009
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Put together the PC yesterday, and had a problem where turning on the power would result in a short "click" (fans move about a quarter turn), then immediate silence from the system. No beep codes or error messages on the motherboard.

Started taking the system apart and testing components. With no RAM and no graphics card I get the system to turn on and finally go to an error message on the motherboard. Added two sticks of RAM (dual CPU system so two was minimum) and I again get the system to turn on with error codes.

Add in the PCI-E graphics card, and this seems to cause the problem. The system is back to immediately shutting off with just a slight click. Is this problem likely to be motherboard/PSU (not enough power?), or the graphics card itself?

Import System Components:
Power Supply = 1050W Seasonic X1050 (plenty of power overhead)
Motherboard = Asus Z9PE-D8 WS
CPUs = Dual Xeon 2670v2 (this requires a new BIOS, which I got from ebay and hand installed - people who have the wrong BIOS report that they boot to an error code).

I have a backup GPU (on the current rig I am using, that I could install.) I could install the PSU from that unit temporarily, though it would be a pain in the ass. I can also switch the PCI-E slots.
 
Solution
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To double check that, go to http://pcpartpicker.com, click a system build and select all of your exact components. It will not only tell you if there are any compatibility problems, but it will also calculate all of your voltage requirements as well.
At the top of the build systems list, it will show what your power requirements will be.
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ozmiz

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Jul 12, 2008
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If you can get the cases close enough to each other.. use your other systems PSU to plug into the new mobo, graphics card, and hard drive, then try to power it up and see what happens. ( I have done that before to keep from having to completely remove a PSU when I was testing for errors)

If that still doesn't work and it still acts the same, just 'borrow' the other GPU long enough to test out the new mobo out with a different GPU.
I'm thinking its either a faulty PSU or the GPU is in fact bad.
 
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Lyuokdea

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Success - sort of! Adding an old GPU (a 9600 GSO) makes the system POST correctly (goes to BIOS and sat there stably for about 5 min). I powered it from the same socket of the power supply and put it in the same PCI-E port. I think that rules out the PCI-E port being the problem.

So is the GPU bad, and could that actually make the system power off immediately? I don't really see anything else it could be - though I guess in theory I'd like to test another high end card to make sure there isn't some lack of power problem. It's a 8+6 pin GPU - so it requires two different PCI-E power connections - what if I draw that from two different lines of the power supply? The power supply I have now, has PCI-E ports that split to an 8+6 port, so I've been plugging both into the GPU from the same line.
 
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ozmiz

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Not sure if the split would matter or not. .. hmmm, sure sounding like a gpu problem. Of course your ideal of getting another high end card would help, or testing the suspected gpu In another system. Luck
 
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Lyuokdea

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I'm trying to figure out if there is a maximum amount the PSU can put out on each rail or something - but this is a pretty high end power-supply, and the cording is clearly meant to put the GPU on a single rail (every PCI-E power cord is an 8+6 cord).... so that seems odd. Will probably RMA the GPU.
 
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Lyuokdea

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Can someone confirm that the power supply should be able to handle this unit? Someone on another forum has mentioned that I might need a bigger power supply - but 1050W seems like it should be plenty for 2x Xeon 2670v2 (115W) and 1 GeForce 580 (max 224W) -- correct?
 
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ozmiz

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Jul 12, 2008
48
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18,560
To double check that, go to http://pcpartpicker.com, click a system build and select all of your exact components. It will not only tell you if there are any compatibility problems, but it will also calculate all of your voltage requirements as well.
At the top of the build systems list, it will show what your power requirements will be.
 
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