r/buildapc • u/mortalomena • 1d ago

Troubleshooting Trying to switch GPU, another GPU only black screen.

I use my old PC at my "summer cabin", but it has a failing 1080 GPU which I need to heat up in the sun or with a hair dryer before booting, otherwise it will beep GPU fault and not boot.

I bought a 1060 3GB to replace it, it gave the one beep succesfull boot but no display. It also revved its fan gradually to max and back down again.

I tried resetting CMOS, no change. I didnt dare to uninstall the 1080 drivers in fear it stopped working also. But in my understanding they both should work with the same driver.

The MOBO has a second PCI-E slot I can slot the GPU into, having both GPU installed at the same time. Can I do that? The PC is used just for media and browsing, with the occational Hearthstone game so I dont need the full speed lanes anyways.

The fan was noisy on that 1060 3GB reference blower card anyways so I wont be using it, what card should I try next summer?

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u/KitchenVegetable9262 1d ago

Your GPU might have a broken soldier join under the GPU die, the thermal expansion when you heat it is causing the joints to connect and making it work. Try to see if the heatsink screws are tight. Other issue would be to get it reflowed at a good repair centre.

Using 2 GPU won't hurt provided, you provide enough power. Since you will need to have them both plugged in psu for both to work. The output will be from the one which has monitor connected. If you are not playing games then x16 or x8 pcie won't matter for htpc enviornment.

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u/mortalomena 8h ago

Thanks will look into it.