GA-Q77-D2H + GTX670 = Black screens and white screen and inifinite wheel of death

[frigjord]

Bought the board as an upgrade from GA-H67 that have worked flawelessly.

But now i can't boot the install USB and i can't boot the old install, it just refuses to find the GTX670.

I have:
- Tried flags like PCIRootUID=0 but no go, only black screen or white screen.
- Changed settings in BIOS to Init Display First = PEG and disabled internal graphics card

What else can i try?

 

[frigjord]

Anyone?

Have googled for two days, reading forum after forum... I guess there is nothing more to do than to give up.