Ist vorher ein 30.* installiert gewesen?
Wenn ja:
http://www.guru3d.com/forum/showthre...threadid=38125
daraus:
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There was a program made to fix this problem. To get it go to the Guru3D files section > Videocard drivers > NVIDIA detonator drivers > Detonator 30.xx to 40.41 fix
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HTH
g17