Amd FX 8350 Asus M5A97 Evo r.2 Corsair CS550M (new) HD5770 etc.
We bought a MSI GTX970 Gaming 4G. I deinstalld with DDU the old drivers and put the 970 in. The problem is now, the pc doesnt boot with the 970 in slot 1, but it boot with the HD5770. When I put the 970 in slot 2 (x4) it boots and and everything works fine.
I updated the BIOS and montaged it multiple times, but it doesnt boot. What I noticed is that the "VGA LED" on the mb (above slot 1) turns red after few seconds.