PCI-E slot not detecting GPU.

[soundb0y]

Im having a bit of a problem, using gigabyte 970a-dsr board with 7990 GPUs.

After shutting down and restarting once, one of the pci-e slots is not detecting a card. It is doing this with multiple cards so not the GPU which is at fault.

It is powering them up, but not showing up once you turn the computer on. Is it likely that the slot is broken or could it be a setting somewhere that has changed?

Any way to check?

Many thanks,

 

[soundb0y]

Yes UEFI Bios, I dont understand what that means. I havent updated it yet.

I have an old 4890 I can try in its place but was trying other 7990s.

It's posting and booting up fine, just not recognising the card, although there is power to it.

 

[soundb0y]

Have just updated the Bios and nothing has changed.

 

[soundb0y]

Hmm well I have dual 7990s running on the same motherboard in other rigs without a problem. I have tried clearing CMOS and no difference.

Yeah it was doing what you say, keep restarting, but now it just boots up fine and ignores the 2nd card is even there.

 

[soundb0y]

Yeah thats right.

I can get into the bios fine. I cant see any settings for CSM, but I have changed boot mode selection to legacy and other pci device rom priority to legacy, and had no change.

 

[soundb0y]

Im assuming it must be a broken board. My 4890 wont work in that slot either.

Its strange as it sounds like the computer is booting properly with only a card in that slot, but no cards showing in windows and no activity in cgminer.