I Sold my Friend my Crysis 3 Key from AMD NeverSeatleReloaded Aktion.(I hate FirstPersonShoter)

But my Friend cant run Crysis 3.
Game Starting normaly. We click on new campanion, after Intro Black Screen.(Ctrl+Alt+Del and i can end Task).
We Tested Diferend Resolutions, Diferent Graphic Quality.

We tested many diferend other things.(im self Informatik professional)
Autostart "Cleared" ( msconfig)
Win7 reinstalled.
Newest AMD Driver.. etc. also tested older drivers.

I even got him the reloaded version, did not work. Same Error.


Other Games Working.(Dead Space 3, CoD....)

Pc:
C2Duo 8400 , standard core clock.
AMD 6870
4GB
Win7 x64 Ultimate
Newest Driver, Windows UpToDate, etc.

Service Package 1? I know it wouldn't help but it's a 'requirement' on the retail version's box. When the game was launched lots of 68xx/69xx users had problems :/

Tried uninstalling, clean registry with CCleaner and install to.different folder?