New
#390
No worries. It's not going to damage your system. The SFC scan is designed to try and repair any corrupted or modified system files it finds back to a default state.
System files are not settings, so unless you used a program like Resource Hacker to modify a system file, then you have nothing to worry about.
If you like, you could create a restore point before running the SFC scan. This way if it undoes anything you don't want undone, you could do a system restore using the restore point to undo what the SFC scan did.