Operating system reinstalation

Reinstalling the operating system is another approach to virus removal. It involves either reformatting the computer's hard drive and installing the OS and all programs from original media, or restoring the entire partition with a clean backup image.
User data can be restored by booting from a Live CD, or putting the hard drive into another computer
These methods are simple to do, may be faster than disinfecting a computer, and are guaranteed to remove any malware