Gigabyte Z77X-UD3H - No Display with PCIE x16 slot

[bodean]

SO I just replaced by old ASUS MB with a new Z77X-UD3H

I am able to boot back up into windows 8.1 without any issues, as long as I have my monitor plugged into the onboard video, and my ATI 7950 out of the system.

When I put my ATI video card into the system, I get no display on my Monitor, and see a A6 light on the motherboard. I have removed all ATI drivers from my windows. Any ideas how I can fix this and use my video card? thanks

If I move my video card to PCIE x8 slot, it works fine. How do I get my card to work in PCIE x16?

 

[bodean]

Going into bios, MIT, and setting PCIE to Gen 2 fixed the issue. I guess I cant run PCIE 3.0 with i7-2600K processor. After 4 hours of troubleshooting the issue is now fixed