Can't use mouse or keyboard at the welcome screen

[eCLIP-GER]

Hey guys,

im trying to install os x lion for about 5 hours now...

but everytime im at the welcome screen, i cant use my mouse nor my keyboard.

Hardware:

i7 2600k
ASUS P8P67 EVO
8Gb Corsair XMS 3
PoV GTX 580


i've already tried launching the installer "PCIRootUID=0", "GraphicsEnabler=No" and "usbbusfix=yes" but nothing helps :/

 

[eCLIP-GER]

Nobody has an idea...? :/

 

[macpeter2]

check bios for USB options to support keyboard and mouse