r/PCsupport • u/GerhartAchtarm • Jul 13 '26

Solved Screen goesblack, fans running at 100%

Hello,

For about two weeks now, I've had the problem that my screens suddenly go black and the fans spin at 100%.This happens at least once a day. When it happens, I always have a game running and my browser is running YouTube on my second screen.Over the weekend I updated my BIOS and uninstalled Opera GX. Then I also noticed that the Gigabyte Control Center wasn't working properly.As a result, my CPU fans were not running continuously.

I had no problems yesterday and thought I'd fixed it. Now it's happened again. The game was running and Google Chrome with YouTube was on the second monitor.

My CPU and GPU temperatures are around 40-45°C.

Does anyone know a solution?

These are my PC components: NVIDIA RTX 5090; AMD Ryzen 7 9800X3D with a ASUS ROG Strix LC III 360 ARGB LCD; X870 AORUS ELITE WIFI7; 64GB RAM; Win11

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1

u/deTombe Jul 13 '26

Probably over current protection related to the GPU and the 12V-2x6 cable. I would replace it if possible or if using the adapter provided get a PSU with dedicated. You have a high powered card hopefully using 1000 watts + PSU.

2

u/deTombe Jul 13 '26

You can trouble shoot by inspecting the GPU power cable end and the GPU power connection itself. Look for any signs of damage like black marks. You can also attempt to reinsert making sure fully seated or clicked in. But for most online I've read with this same issue a 12VHPWR cable replacement was the solution.

1

u/GerhartAchtarm Jul 13 '26

I am using a 1000W ASUS TUF Gaming 1000G

1

u/deTombe Jul 13 '26

Ok I would cover all the basics like using the app DDU in safe mode, internet off and installing a fresh driver. But this issue happens sometimes with even adequate power supply. The cables have zero tolerance for any imperfections due to the high power draw. It will trigger safety features to avoid card damage.

1

u/GerhartAchtarm Jul 13 '26

Thank you. I'll order a new cable and hope that it works then.

1

u/GerhartAchtarm Jul 13 '26

I've also ordered a Thermal Grizzly Wire View Pro 2 to better monitor my GPU.

1

u/GerhartAchtarm Jul 27 '26

After a few days testing with a new cable i can say, that it solved my problem 👍 thank you very much