didn't work out and i didn't had the Safe mode with a Command prompt, but as i have an Acer i hitted alt+f10 hopping for any restoration menu, but now i'm on a screen that say
Edit windows boot options for: Windows Setup
Path: \windows\system32\boot\winload.exe
and then a large command in [ ] ending in boot.wim.
Damn, how do i have to proceed?
Edit: Sorry if i'm panicing a little, but i'm kind of scared.
Edit 2: Also, if it is helpfull, i'm windows 7