Computer randomly shut down - won't power back on, but fans spin for <1 sec

bryan56

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Aug 1, 2015
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I built my first PC about 7 months ago, and everything was in perfect working order until last night. When I was browsing Facebook, my computer randomly shut down, and would not power back on. At the time of shut down, the computer was not under heavy load (only a few Chrome tabs were open). My parts can be found here:

https://pcpartpicker.com/user/bryan56/saved/#view=s4gypg

When I hit the power button, nothing at all happened. However, when I unplugged the power cable from my PSU and plugged it back in, my fans would spin for less than a second when I hit the power button, but there were no other changes. I've been going through parts today to try to identify the problem, but with no luck. So far, I've tried:
1. Testing the PSU with the jumper included in the box. The fan on the PSU powers up and stays on, leading me to believe it isn't the PSU that's the problem.
2. I removed the cables from my motherboard that connect to the case's power button, and tried starting the computer by crossing the two prongs with a screwdriver. The fans powered up and then right back down, just like when I hit the power button.

The next thing I'm going to try is taking out all of the components then reseating them because I've been told that can help, especially with the motherboard. However, if anyone has any more specific suggestions, I would love to hear them! It would be great if I could easily identify a part to RMA without taking apart my whole PC first. Any help would be appreciated!

UPDATE:
One week has passed. Today I borrowed a friend's PSU, and my PC booted up just fine! However, there was no display. I tried removing my GPU and using the onboard Intel graphics, and my computer works just fine. What's crazy is that I switched back to my own PSU, and the PC STILL BOOTED UP FINE. I guess re-doing all the cabling had the desired effect. However, the GPU is still a problem, and I need to use onboard graphics. I haven't had a chance to borrow my friend's GPU, but I've tested my GPU in both PCIe slots on my motherboard to no effect. Interestingly, the fans on the GPU run just fine, and when I have the GPU plugged into the PCIe slot and PSU cables connected to it, I can't use the onboard graphics (probably because my PC recognizes that there's a card). My questions are:
1. Is it worth borrowing my friend's GPU to test if it's the GPU or motherboard that is the issue?
2. Is it possible that my PSU fried my GPU? It is currently providing stable power to the rest of my system.
If you have any other advice, please share it!
 
Solution
Hey guys! Sorry this is so late; I forgot about this thread. It ended up being the GPU, which I RMA'ed thus fixing the problem. Thanks for the input!

Lookin4Info

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Mar 2, 2016
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Honestly sounds like PSU to me. Your PSU is under a 10 year warranty (as long as you registered it on their website in 30 days or less) so should be fine!
 

bryan56

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Aug 1, 2015
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Hey guys! Sorry this is so late; I forgot about this thread. It ended up being the GPU, which I RMA'ed thus fixing the problem. Thanks for the input!
 
Solution