Fried video card? Insufficient power? PC will not start with video card installed.

jazzy663

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Feb 12, 2014
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So after weeks of trying, I've exhausted my knowledge and am in need of some assistance.

First thing's first: Here is a link to my current complete parts list.

Now the nitty-gritty: A few weeks ago, my PC's power supply suddenly gave out on me. No biggie, I thought, it was a cheap unit - I'll just order a new one and use my spare power supply and graphics card (this and this, respectively) until it comes in, changing out my GTX 970 for a 750 Ti because my spare power supply can't drive a 970. The build ran fine with the replaced parts, so I know there is nothing wrong with the rest of the parts.

I ordered this power supply, completely confident that it was a good quality unit and plenty powerful enough to drive my more powerful card.

The thing is, whenever I install my 970, the machine will light up for a split-second, then shut down completely. I can reproduce that by unplugging the power supply, waiting for the motherboard's light to go out, then plugging it back in.

I am thinking that one of three things is happening: The old PSU fried my 970 when it died, bad +12v distribution, or something is tripping the protection circuit. I can't imagine what. Or maybe the unit just isn't powerful enough to drive my 970, and I don't know as much about power supplies as I thought.

It may be worth it to mention that I have never worked with a modular power supply before...

Any ideas? I've checked similar threads only to find that they yield no relevant information.

EDIT: It is probably worth it to mention that I am using the integrated Intel HD Graphics at the moment.

Thanks,
Kyle

 
Solution
Take the 970 out, attempt to start the machine with the new power supply and no graphics card. Attempt to start it with the 750ti and the new power supply.

If both of these work, then I'd say your 970 is dead.

It's not uncommon for power supplies to damage components when they fail.

wezegan

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It could be any but the best way to determine where the problem is I suggest you to try any of:
Try your GPU on a friend's machine.
Try another PSU (you don't have to buy, maybe using a friend's machine) to your machine.

If you try your GPU on a friend's machine and you see the same problem, it is your GPU.
If you are able to use it, it is the PSU.

It seems that it is a power failure, not a GPU problem, also try to reduce the load of your PSU:

Remove the GPU, it will probably start (don't panic, maybe the PSU is sending low power to the GPU).
Remove everything, HDDs, fans, DVD, blu ray units, but your GPU. Try to turn your machine only with your GPU plugged and see if you get BIOS message. That will indicate you that is your PSU.
 
Take the 970 out, attempt to start the machine with the new power supply and no graphics card. Attempt to start it with the 750ti and the new power supply.

If both of these work, then I'd say your 970 is dead.

It's not uncommon for power supplies to damage components when they fail.
 
Solution

jazzy663

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I don't have my 750 Ti at the moment, it is in my "spare" PC, which I have been taking parts from to get my main one running. That is elsewhere, I will get it later today and give it a try.

I don't know if you saw, but I did edit in the fact that I am using the iGPU on the machine in question. I suppose that does not bode well. Bummer. That 970 was my birthday gift.

EDIT: Could you confirm for me that my new power supply is indeed sufficient for the card in question?
 

jazzy663

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Circumstances such as work and free time have not permitted me to attempt your suggestions, but I will make an effort to try them sometime.
 

jazzy663

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That's what I thought. Worth a shot.
 

jazzy663

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An update.

I went and retrieved my 750 Ti from my spare PC, popped it in my main one, and the machine booted without issue. This confirms that my 970 is dead, or there is at least something wrong with it. I will try it in a friend's PC when I get the chance, and if it does not power on, I will be dissecting it for educational purposes...

Many thanks to all that answered.
 

wezegan

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:( it's a shame.
 

jazzy663

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Probably not. The part number ends in -B6, which isn't listed on EVGA's warranty page. The full part number is 04G-P4-3979-B6. I bought the card from Best Buy last year, which was probably a mistake, and that's probably why. I didn't purchase an extended warranty from Best Buy, so whatever warranty it may have had is probably long gone.

EDIT: I realize that's a lot of probablies.