I have been infected with Trojan horse. I work with XP, but am guilty of not updating it regularly . I use McAfee Virus Scan, and when it has detected viruses, it recommends moving them to the vault and cannot erase them, if I understood correctly. I have recently been using Spybot, which worked very well for removing I-lookup bars, dealing with trojans, etc.
However, about 3 weeks ago, on starting my computer, when it reached the user acounts login screen, a window appeared signaling Trojan infection - please run AVG. Upon clicking "ok" or "x" or even trying to click a user account, the computer would simply restart, and the whole thing would happen again. I left the computer off for a while and the problem went away.
But 2 days ago the same thing happened. But this time it's not going away. So I obviously cannot run any scans and delete the trojans since I can't get into any account.
Is there anything that can be done besides bringing my computer to a technician and having him/her re-install Windows and everything??