I had to use Google to find out how to get rid of starforce after it got 'accidentally' installed from an OEM version of Trackmania
Same for me except it was Trackmania 'Demo'
After installing the demo I got a message saying "Starforce protection installed. You need to reboot"
That scared me a bit since I initially thought it was a virus. There was NO warning or mention during the game installation.
I noticed later I could not copy files to blank CDR's. Windows would complain that no recordable media was found.
I dug around the internet and found a Starforce removal tool which seemed to have fixed things
Needless to say Trackmania was promply removed and I emailed the authors with a rather blunt email asking them why they did not give any warning that SF was about to be installed (at Ring '0' too!)
They gave the typical tripe response like, "don't worry, the drivers are only used when the game loads"
Shame really because TM was a fun game to play.
Starforce Removal