Norton antivirus startup problem!

[telstar2626436]

Whenever i log in to my computer i get an installation box named norton antivirus 2005 install. then after it fails it says The MSI must be launched through SETUP. It happens every single time. Really need HELP!! i got window xp media center

 

[magicman]

Have you tried using System Restore to roll your pc back to an earlier time? Also you could find out whether anything's listed in the services list. Go Start > Run, then type services.msc, and look through the list. Anything that looks like it's the cause you can try it disabled.