How to Repair Corrupted Windows System Files with the SFC and DISM Commands

Run the SFC Command to Repair System Files

sfc /scannow

Run the DISM Command to Fix SFC Problems

DISM /Online /Cleanup-Image /RestoreHealth

References :
http://www.howtogeek.com/222532/how-to-repair-corrupted-windows-system-files-with-the-sfc-and-dism-commands/