Hi Blue Boy,
Have a check for a running process (or start up) called..
CDILLA
It's copy protection, but not on the CD. It runs from the hard drive. There are a couple of others, but I'm just off out, and can't remember what they are.
It could be the problem. If you're not sure, list your running processes here, and I'll check them out for you. Just a possibilty.
Cheers
Liam