win 7 antivirus 2012 self-extracted on my computer without my permission. I did not register, assuming it was malware. I was running avast antivirus protection. I restored my computer to an earlier date where I knew system was not infected. I then installed Norton antivirus 2012. I utilized Norton power eraser. No infected files were found. Does this mean my system is safe and the win 7 antivirus has been removed when I used system recovery? Thanx for help.