Open the Start menu and search cmd. Right-click on it and choose Run as administrator. When Command Prompt opens, type the command
and press Enter.
This command will check the system files and will repair them if they are corrupted. At the end of the repair process, and if it has found an integrity violation and fixed it, restart your computer.
If the previous command didn't solved the problem, try restoring your system to a restore point. To do so, press the Windows + R keys and type rstrui.exe. Select Recommended restore and choose a restore point before the problem occurs. To have more restore points, click Back and select Choose a different restore point.