I have an HD 5970 running on a P8Z68-v LE motherboard and I have no image comming out of the graphic card.

  • When I plug my screen on my motherboard, I see the bios and the OS.
  • When I plug my screen on the graphic card, I don't see anything.
  • I know that the graphic card works because I have tested it on another computer.
  • I know the motherboard works because I tested it with another graphic card and it worked.
  • I know that the graphic card works with the computer because I have another computer with a P8Z68-LE and an HD 5970.
  • I know it is not an OS issue because I should atleast be able to see the bios. I have tried unplugging my HDDs so that the OS dont interfere with anything.
  • Using a 1000W power supply

Using another HD5970 on the computer works. So this is a problem with my HD5970, but why is the graphic card working on my other computer?

  • 6
    Is your powersupply delivering enough power to the GPU?
    – kobaltz
    Dec 17, 2011 at 3:23
  • 7
    You won't necessarily see the bios, I have had a similar setup where the secondary card is not initialised until fairly late if the default card is set to be the integrated. Look in the bios for a Integrated Graphics / PCI graphics priority or primary setting.
    – Paul
    Dec 17, 2011 at 3:29
  • 1
    +1 for troubleshooting first, and telling us. :) Dec 17, 2011 at 3:31
  • 1
    I know the motherboard works because I tested it with another graphic card and it worked. Does the other graphics card use the same 6(+2) pin power connector?
    – Dennis
    Dec 17, 2011 at 3:39
  • 3
    You can also change the BIOS to enable PCI cards as your primary. I'm using the same motherboard as you with an ATI 6970 and Integrated Graphics. 3 monitors on the ATI card and 1 monitor on the integrated.
    – kobaltz
    Dec 17, 2011 at 3:42

3 Answers 3


Does your motherboard have a second PCI-E slot? If so try that, could be a dead slot. Also check your bios and see if you can find a default Video output option, like set it to PCI-E instead of onboard, You can also try to disable the onboard video and see if that works. Its not that card at all, since it works in another system. ITs got to be a setting on the motherboard somewhere, You can also try to unplug the power from the computer, and then take the cmos battery out for a min or so, then put it back and plug the PC back in. It will reset the bios.

Also try a different Powersupply, maybe the plugs that go into the Video card have died.


It's got a be a super simple solution judging by all the other testing you've done.

I'd make sure you first double check to make sure you meet the minimum system requirements of card. 30+ AMPS on 12+ rail, total psu wattage, both pci-e power connections are in, and that the card is the PRIMARY PCI-Ex16 slot.

Make sure bios is set to load pci graphics above ONBOARD. Make sure when you change the video cable from onboard to the card you restart the computer. Most boards don't hotswap from onboard to discrete. System needs to reboot to show anything.


You say: Using another HD5970 on the computer works

I would check board revisions and firmware revisions on the cards

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