GTX 780 under load turns screens off and restarts PC

yoh1len

Commendable
Oct 23, 2016
2
0
1,510
Hello,

recently my GPU started to behave very badly. I think it might be bad but want to confirm this. Basically whenever I turn on a game, or stress test it runs for a while then it turns the screens off and restarts PC. After PC restarts monitors still do not turn on. I have to plug one of them into iGPU, boot into windows and then I can reconnect it back to GPU and it works (this is probably my BIOS setting - when problems started I set it to iGPU as main)

Recently I tried FurMark stress test on the 780. It survived stress test, scored lovely score, no artifacts, temperature did not go over 60°C even under 99% load.

BUT after the FurMark finished, showed me the result, my PC froze, after couple seconds screens turned black and PC restarted.

I am sure FurMark has been using only GTX 780 so iGPU is not the problem, i can even use iGPU to play games, that will freeze my PC if using 780.

System Specs:

Processor Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz

Video Card Intel(R) HD Graphics 4600

Video Card #2 NVIDIA GeForce GTX 780

RAM 32 GB

Operating System Microsoft Windows 10 (build 10586), 64-bit

My PC has been running with the same setup for over 2,5 years. So I do not think that PSU should be the fault. Is there anything else I should do to confirm that the GPU is faulty? I cant test in with different mobo/ PC. All drivers are up to date. And the same happens when running GTX 780 with Fedora 24.


 

yoh1len

Commendable
Oct 23, 2016
2
0
1,510


PSU: enermax erv750awt-g revolution87+ 750W

I forgot to mention that the PC has been running literally 365/24/7 last 2 years. So if normal use should last for 6 years it would not be so surprising that it is gone.
 

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