If you are running Windows Vista or Windows 7 on the computer then run SFC scan.
If a Windows Resource Protection (WRP) file is missing or is corrupted, Windows may not behave as expected. Run System File Checker (SFC) scan to fix any corrupt system files. To do this, follow the steps mentioned in the link below:
How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7