Hello!

PROBLEM: My CPU usage is running at 100% all the time and 90% is taken up by "System" (NOT system idle process), even with no apps running.

SPECS: P4 2Gig with 512Megs and 80GB hard drive with XP. Few programs installed (mainly used for net and media).

TRIED:
- ran Norton AV 2004, Adaware, Spydot; they did remove some spyware but didn't resolve high usage
- defraged the hard drive (less than 50% full) but it didn't help either.
- uninstalled Norton Internet Security, still at 100% (then reinstalled)
- System Restore to before installation of WINDVD (only recent software install)

QUESTION:
Did a lot of searches on Google, read a lot of forums but I can find anything relevant or tips on troubleshooting. I don't know what else to try or how to procede: Can anyone help?!

THANKS IN ADVANCE!