Question PC Crashes when load of GPU abruptly changes (R9 290 Tri-x)

May 1, 2020
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Hi all,

I've done a lot of research and I'm out of ideas.
My pc keeps crashing when the load of my GPU suddenly changes. The first time it happened when I was playing RE2. So I went on looking for the problem by using furmark. I figured out that when I started the furmark test my pc instantly crashed. So I underclocked my gpu from 1000mhz to 750mhz. The furmark test worked fine. I started upping the clock slowly until I reached 1000mhz again. The test was running just fine, until I once hit the windows start button and once when I just stopped the test. My pc instantly crashed again. So I think my pc only crashes when the load of the gpu abruptly changes. Any ideas what the cause of the problem could be?
I don't have another pc to test my gpu.

Things I've already tried:
-Removing and updating all GPU drivers.
-Changing power cables from PSU to GPU
-Switching GPU to another PCI-e slot
-Temps are not higher than 70-75 degrees

These are my specs:
OS: Windows 10 Pro
Processor: Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz
RAM: 8,00 GB
Motherboard: MAXIMUS VII RANGER
GPU: Sapphire R9 290 4GB GDDR5 TRI-X
PSU: Seasonic G-series 750 watt
 

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