Sudden black screen with gpu fans at full speed

[Chris0606]

Hello, so I've been experiencing quite a unique issue where my system would suddenly decide to go black screen and cause the gpu fans to unecessarily spin at full power, unable to stop it unless I physically reboot the pc. This has occurred at very random situations such as simple browsing or loading up a game, but sometimes it doesn't do it at all considering the system is at full pressure.

This has been occuring since the replacement of an old psu, where the old 600w psu (which came with inside the atx case) suddenly died and I replaced it with a new 850w 80 plus gold psu, (specifically called the DeepCool PM850D).

Im currently sat with a dual geforce gtx 1060 and i5 6600k monitoring their temperatures on some heavy games at 1440p, where the 1060's max temp was 86C, (which had always been the case) and my cpu at 75, (clearly indicating that it is not a hardware issue).

At this point the only cause that comes up in my head tends to be a faulty psu, which costed around 60 pounds in amazon, however I don't see how that could be the cause considering it was purchased fresh new just 2 weeks ago, therefore I strongly require some possible solutions or causes that could help me finally solve this unusual issue.

 

[Vanilla]

This will probably get moved to general hardware or graphics cards.

- I have an AMD Vega64 and would have the same. PC would black screen, fans to max, had to be switched off and restarted.
- No drivers would fix it. Happened for years, throughout mobo and CPU changes.
- Often it would black screen but things like discord would keep working - i.e was purely graphical but absolutely needed a restart.

TBH the one way I found to avoid it was to go into AMD control centre and underclock the GPU and GPU ram. This may not be the same with you as many of these problems could have multiple fixes and causes.

 

[Hades]

I had similar once (also with a Vega 64 although I see the OP has a GTX 1060). It turned out to be a bad PSU. I replaced it and everything was fine after. Considering the PSU is the only thing whihch has changed in your system since the instability started then I suggest this is at least a big suspect.

 

[Blackjack Davy]

This is either hardware or drivers in my experience but most likely hardware

 

[Werewolf]

Hi I'll move this to graphics cards, but my gut feeling is that its probably psu or driver related, and I'm leaning towards psu given you've changed that recently. It may be worth trying without sli or with only one card in, then the other to check to see if there is a hardware issue with one of the cards.

The other thing to check is if the event log has anything happening when it goes black.

 

[Chris0606]

It turns out I haven't plugged the cpu cable in hard enough as it came out with the slightest push. Thanks to everyone who had the courage to help solve my issue my system is back to its normal shape!