Thats weird, are you sure that after installing Boot Camp you Verified and Repaired all disks, its something that is usually the cause of almost 99% of all Mac related problems. If that does not work then what you could do is repeat what your doing and look it up in the Console, it basically keeps a written record of whats going on in the system.
Good Luck, remember its always a good idea to repair and verify the disk that your using, especially after re-partitioning a drive or installing large software updates.