I am running Vista on my HP pavilliondv9000 laptop. The security system I am using is norton, but I think it has expired. I downloaded Spybot search and destroy this morning. I have also tried using spyware cleaner 2008 from rnsafe software corporation. Neither of these programs seem to have fixed the problem. I tried to follow the steps that were sent to me by downloading Avast! home edition, and it caused problems with my computer starting up. I am also having a problem unistalling Norton antivirus from the computer