'.NIX invulnerability is a myth. Mac Os is a 'NIX, and it has viruses. Same with BSD.
Doing the Hardware Reset can cause the malware to install on the next boot-up.
Prevx has for me been nothing but trouble. It flags EVERYTHING as malware, and blocks everything which has changed since Prevx was last uninstalled and reinstalled. Needs to be reinstalled for this reason every month, when MS Updates are installed. Nothing but hassles and false alarms in my experience.
Comodo and Malwarebytes are fine programs, but you still need a real-time antivirus app. For this I would use MSE on Windows 7, and Avast on Windows XP, unless Avast does weird things on your computer, as it did in Version 6 on my WinXPPro SP3 laptop. There, I reverted to MSE.




