I'm having some issues with a computer that I built. When the GPU power is not plugged in, the computer boots and works fine. But after plugging in the GPU power, it fails to boot. All I get is a twitch of the fans, then nothing. Note that this is similar to the issues experienced in this question, except that my system boots fine if the GPU is in the PCIE slot. The issues only arise after I plug in the 6-pin power cord.
Some background: I've had this system for about a year and it's been working fine until now. The genesis of the problem was when I moved my audio card from one slot to another in an attempt to fix some white noise issues. It doesn't seem like that would cause any issues, and the problem persists even when the audio card is completely removed.
I think that I've fried my GPU, probably through an accidental bump or static discharge. However, I also suspect it could be power supply or even motherboard issue. Having an idea of which one to replace would be helpful, especially because I don't have access to another system to test components individually. I'm not sure if these symptoms are indicative of a specific problem, or if there is any good way to test where the problem is.
Some relevant specs:
- Motherboard: Gigabyte GA-Z87X-UD3H ATX LGA1150
- GPU: EVGA GeForce GTX 660 2GB
- Power Supply: SeaSonic 650W ATX12V / EPS12V
EDIT: Waiting ~12 hours with the computer off and unplugged didn't help the issue, so I'm guessing that it isn't a weird capacitor issue. The computer also fails to boot if I use a different PCIE slot.
41 Answer
In case anyone else has similar symptoms, it turns out it was a GPU issue. Computer is working fine with a new graphics card (GTX 970).
