Yes where
In reality it's not that simple
Ack-Ack may have run into some very basic version of malware which could be removed so easily. The more advanced attacks will write randomly named copies of itself and reg entries to start with. They will inject existing and 'legal' dll and .exe files with their attack code. They will inject and alter critical system files (rootkitting the system). They will write a payload to MBR or boot sector, infecting the machine again on the next bootup even if cleaned. They will flash your bios with malware. They will win, if you're foolish enough to think you're outsmarting the criminal genius
Only way to handle an infection or even suspected infection is to do a total reinstall, including erasing master boot records which a regular format won't do - and always keep the bios locked.
I have seen infections dance past up to date mainstream antiviruses so many times that I have zero confidence in them anymore.
