Running Norton System Works - Cd Launches It Freezes System

The my computer window instantly opens with all the correct icons displayed on the lest (view system information add remove programs change a setting...) but it shows no drives and I cannot click on anything. If I hit control alt delete it is reported as not responding but after about 45 seconds the rest of the icons show up. I open control pannel and try to open the system folder and nothing happens. I tried running nortons system works windoctor but after the cd launches it freezes. After about 3 hours of working on it I gave up and reinstalled windows ( i did the windows repair so I didn't lose program files and such, i did not re-initialize). After re-installing everything was going fine until last night. The same exact thing is occuring again. Ive attempted running Ad-aware and its locking up after it finds a few files, I have no clue what its finding since its locking up. Ive tried booting in safe mode but it locks up at mup.sys. Their is also no internet connection IE or Firefox can find but when I open the network connections folder it says that I am connected. Im wondering if its a bad HDD or if I've got some delayed action virus or something. Neither seems to likely to me since if it was the HDD when i ran a HDD scan (in dos from the win repair cd) it comes across as fine and the virus would have to be a delayed action one or something since it keeps hitting almost exactly a week after the problems occur.