Gigabyte Z77X-UD3H - A6 ERROR on boot

[gizbug]

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

 

[denis280]

you dint do a os fresh install.if i understand.if so you have to remove all ati drivers.then do a fresh install for the gpu

 

[gizbug]

All ati drivers were removed after i installed the MB.

 

[gizbug]

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

 

[gizbug]

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

 

[denis280]

Perfect