There's plenty of system files that are required for proper system operation on the Windows platform. Just because you don't know what it's for doesn't mean you can go on and delete it.
If a boot fixes it, you're lucky, most of the system files are not doubled for automatic restoration.
-_- , i know a list of files which you may not delete or you pc will go wrong. also i have a program for it to see what files are in use by your os ;D.