Do SFC /SCANNOW Command - System File Checker
and let us know what happened .
If it is not solved, we are to look for further steps .
Anyway, when you are modifying a system file/ applying a modded system file, the best thing is you make two types of backup, namely, a system image, and manual backup (copy and paste in somewhere else secured place) of those files . But as you have not done it, it went a bit difficult to fix it .
And fill up your system specs properly (System Info - See Your System Specs
) , help us to suggest the appropriate steps .