Black screen + GPU fans going crazy
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Good luck.
The thing with stress test it’s synthetic, does not perform exactly the same because the way game engines work is a totally different beast.
My PC kept blue screened in games in less than 5 min, but stress tests run fine over 30min, eventually found out it was due to faulty PSU.
Have you tried other games? or older GPU drivers?
Also, are the fans controlled by a controller software? like Corsair Link.
Ci7-4471 + Corsair Hydro H100i | EVGA GTX980Ti Hybrid | Corsair Vengeance Pro 16GB | Samsung EVO PRO
If possible substitute a known good power supply into your system.