R9 280x Problem

[Scofield]

I have been mining Ethereum with some R9 280x cards for a while, but suddenly I have issues with 1 GPU.

Under Device manager I see a yellow ! sign on GPU5. When I click on properties it says "Windows stopped this device because It was having issues" I have tried to disable & enable it, and reinstall the driver. Both failed.
What else can I try? Could it be a power supply issue?

Any help is appreciated.

[Kenid]

Is that Overclocked? You can remove the card, and put into another slot. How many card do you have in total?

[Scofield]

5 cards in total, 1 not functioning. The cards are not overclocked. I have tried a diffrent PCI slot, same problem... I have also tried another GPU, same problem...

[Oilacris]

You may remove the driver completely using something like DDU Display Driver Uninstaller. Then reinstall.

[Scofield]

You may remove the driver completely using something like DDU Display Driver Uninstaller. Then reinstall.

I'll try, thanks.

[dannygroove]

What PSU do you have?
Check risers, try with a different one once you identify which card is failing.
Windows or linux? What drivers are you using? I think that for 5 cards or more you need to mod the driver (Windows): https://bitcointalk.org/index.php?topic=712228

[CorePrime95]

What power supply do you have? Maybe its degrading. Does the card function if used alone?

[Bemerand]

What PSU do you have?
Check risers, try with a different one once you identify which card is failing.
Windows or linux? What drivers are you using? I think that for 5 cards or more you need to mod the driver (Windows): https://bitcointalk.org/index.php?topic=712228

One of the card is not recognised by the Windows system. It is shown in the device manager. So it is not the power supply problem.

[Zeelotin]

Maybe you can use the 6+ GPU mod. It can help you to get the system to recognise up to 8 GPU in a system.