New
#11
Well you gotta do something and quit "thinking" this ir that won't work. I would be looking at a full clean new install of w7.
Backup and have all of your software keys handy to install them after wards.
I believe Authenticated user is a system account and should be left alone, as TrustedInstaller.
I suspect you have got hold of a few poisoned torrents, if you know you have a "virus" get rid of it. It may be a rootkit, worm, or Trojan too and all can steal your passwords and account numbers, say, for a bank or credit card.