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Question

My Desktop Won't Turn On

Apr 6, 2020 10:25AM PDT

Problem: Desktop randomly turned off while playing Witcher 3. I tried to switch it back on, but nothing happened. The keyboard is still on, and when I unplug and re-plug in my PC, the light will come on for maybe half a second, as well as the fans, but then nothing whenever I try again (although keyboard is still receiving power). My speakers are also repeatedly making very quiet buzzing sounds off and on. Please help.

More Background: I built my gaming PC 4 years ago, and have had no problems since. However, after switching it on for the first time in 3 months, it turned off mid-usage. I then turned it on and it continued to work fine. Over a week later and this has happened again, except I cannot switch it back on again.
I have since cleaned the large amount of dust from within the PC, as well as vaguely check to make sure all the wires are plugged in properly, and that nothing is touching the motherboard that shouldn't, but it still doesn't work.

Possible Solution: I have a spare power supply which I could try, but it will take a while to set up so I would like to know if there is anything else I should try first/ if this doesn't look like a power supply issue.

Thank you so much to anyone who can offer any help, know that you will be making my lockdown experience exponentially better if you can help.

PC Specs:
PSU: EVGA GQ Series 650 watt
Motherboard: ASRock B85M Pro3
GPU: Inno3d GeForce GTX 980 4096MB GDDR5
CPU: Intel I5 4460
RAM: 8GB

Discussion is locked

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Answer
I'll share.
Apr 6, 2020 11:07AM PDT

That I'm starting to see failures in the 9x0 GPU cards. It doesn't help to read about the cleaning as heat accelerates aging.

That aside, you can try the PSU but also make it as small as possible. Even to the point where the motherboard is put on cardboard, the PSU added and you attempt a power up test. We don't need many parts for this test. It's how you troubleshoot THE DEAD PC. (Hint, google THE DEAD PC to find priors.)

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Thank you!
Apr 6, 2020 11:13AM PDT

Ok thanks, I'll give that a go, any other suggestions would be appreciated.