Ho trovato!
Il file non era più in C!
ecco cosa mi dice ora:


"Stealth MBR rootkit detector 0.2.4 by Gmer, http://www.gmer.net

device: opened successfully
user: MBR read successfully
kernel: MBR read successfully
user & kernel MBR OK
MBR rootkit code detected !
malicious code @ sector 0x950a600 size 0x1a8 !
copy of MBR has been found in sector 62 !
MBR rootkit infection detected ! Use: "mbr.exe -f" to fix.
original MBR restored successfully !"

Quindi dovrebbe essere risolto?
Se ce l'abbiamo fatta ti pago una cena!!