Hello, My girlfriends computer seems to be infected by a virus which hides files upon connecting any USB device, replaces everything with shortcuts and creates a file named files.bat It is easy enough to recover the hidden files, but the virus also seems to not allow anti-virus programs to start at all. I tried MBAM Chameleon, which did something, but the problem persists. I can't start MBAM or other antivirus programms such as Comodo. She is running a Windows 7 32bit system.