Hi guys,i'm installing retail Lion but getting some problem on installation:

I fixed it but:

imgur: the simple image sharer

it's what i get if i try : -v -f pcirootuid=0 npci=0x2000 GraphicEnabler=Yes.

i have tried even:

-v -x -f

-v -x npci=0x2000

-v userkernelcache=no

My Specs: p55a-ud3 - i7 860 - 2x2gb ram - hd sata 1tb ( 4 partiotion dual boot windows) - ati 5850 - ide dvd rom