hi first problem solved! huray arma 3 runs i installed a older gpu driver v. 314.07
but my next problem is i have de arma 3 version 0.71 and i can only play multiplayer on [DEV] servers ... my friends got version 0.70 and all server runs how can i get this version ? yesterday i got an other version 0.73 and today i start steam and baam arma 3 update 0.71 wtf?

Okay ... i think i found the problem. All Directx11 games runs on my pc but! the directx 10 games dont run z.b Resident evil 5 you can run resi5 on dx 9 or 10 on 9 it runs on 10 comes an error. has anyone an other good idea.
Thanks for help guys :)

i deletet the drivers and now it still works !!