Sounds like a Blue Screen Of Death related problem.
Go to control panel -> system -> advanced -> startup and recovery / settings -> uncheck "automatically restart"
This will prevent Windows from being automatically restarted in the event of BSOD and gives you a slight bit more detail on the problem.
I've had some BSODs with FS2004, but only when used the other of my two soundcards - Fortissimo III, FS2004 really hasn't liked it.
However works just fine with SBs stuff.