Thanks for your respons!. Nope i did not install anything in particular what i can remember, after a while i restorded the computer and after that the whole computer went nuts. I can't for example configurate updates like microsoft programs, the graphic card and things like that. I was able to re-install rocksmith but the performance had become so bad that i had to lower every graphics options avaible and when tried to decrease the msaa setting, a strange buzzing noise apeard then the game crashed.