Windows 8.1 and Sapphire Radeon 7950 issues.

Windows 8.1 does not recoqnise that I have a graphics card connected.

The thing that confuses me is that my screen is actually connected to my graphics card and not the motherboard.

Yes I've tried installing all the latest drivers and I get a bluescreen half way through the install!
"SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (atikmpag.sys)"

Any ideas?!

Disable the onboard Intel video in the bios. Set the primary display adapter to PCIe there too. Save.

Then see this and attach results, please:

BSOD Crashes and Debugging - Windows 8 Forums

Further, you should use CPU-Z to check that nothing is overclocked in regards to bus speed, ram, cpu.

The BIOS solution given by MasterChief will solve the conflict.

~update~

I have one of these graphics boards on my other computer, but the MoBo is totally off-board, so no conflict. It's a very good card and I play all modern games at "High Settings" with satisfactory FPS. I'm about to get Call of Duty: Ghosts, the download is a huge 28 GB ISO. I'm anxious to see how my card will do the job.

More power to ya Vrosa. I downloaded it and tried to see what it can do, full well knowing that it can only work for x64 (I use x86) - I wanted to see if there was something I can do to make it go anyhow - but it seems the .exe itself is x64. Have fun!