Please try the following:
-For 7 Users: click Start, in the start search field type 'cmd'. Right-click on the search result and select 'Run as administrator'.
-Type: sfc /scannow
-Wait for the scan to complete (this can take several minutes)
Some help on how this looks should you need it:
https://support.microsoft.com/en-us/help/929833/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system
If the SFC finds errors, but cannot fix them, please also run the following command in the same command prompt window:
dism.exe /online /Cleanup-Image /RestoreHealth
On Windows 7 and earlier, the DISM command isn’t available. Instead, you can download and run the System Update Readiness Tool from Microsoft and use it to scan your system for problems and attempt to fix them.
Please let me know whether this resolves your problem or if you have any additional questions.
Thank you,
Basj,
Stardock Community Assistant