Hi, I've got an older pc: GIGABYTE F2A85XM-D3H + A8 5600K + 4GB RAM + 500W be quiet bronze PSU (not sure about the exact model). I tried adding my old GPU HD6950 2GB (unlocked to 6970) so I can play some games however it doesn't seem to work for some reason. Without a discrete GPU the PC works just fine but when I add the GPU it won't boot or go to bios or anything just hangs on a blank screen. I tried the GPU in my other PC and it works fine so no problem there. I also tried swapping the PSU for a slightly more powerful one but that didn't do anything. I also tried updating bios -> still nothing, then I tried using a different GPU just to see if the PCIE slot on the MB works and it worked just fine; so it's just the combination of that specific PC + HD6950 that doesn't work. Any ides what the problem could be? Cheers and merry Christmas 
