Sounds like system corruption which has resulted from infection by a trojan or other 'nasty'. Try following the advice in the stickied topics in our 'Viruses and Nasties' section, and if that doesn't correct the situation try a refresh install of Windows.
Catweazle
Grandad
4,335 posts since Mar 2004
Reputation Points: 229
Solved Threads: 149
I sooooooo seriously dislike Norton products - for soooooooo many reasons!
The stuff which can't be cleaned or deleted will be inaccessible because it is running in memory. Rebooting into 'Safe Mode' and using decent cleanup tools from there is the way to rid yourself of such pests.
Catweazle
Grandad
4,335 posts since Mar 2004
Reputation Points: 229
Solved Threads: 149