Hi,
If your system has been compromised, Norton won't detect it.
Reboot and begin tapping F8 key at Manufacturer's logo screen
Select Safe Mode with Networking
Download the following and run a full scan
http://www.microsoft.com/security/scanner/en-us/default.aspx
When finished, reboot
- uninstall PDVD 10
- run cleaner for PDVD 10
Cleaner
http://forum.cyberlink.com/forum/posts/list/8449.page#75148
- install PDVD 10 again
- instll the patch offered by PowerDVD