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DISM repair

Deployment Image Servicing and Management (DISM).  Windows 7 and later has a utility that may resolve problems.  But with anything the fix could be worse than the cure!  Use with care!  

Dism /Online /Cleanup-Image /CheckHealth

Dism /Online /Cleanup-Image /ScanHealth

Dism /Online /Cleanup-Image /RestoreHealth


/CheckHealth - This switch option only checks to see if a component corruption marker is already present in the registry. It is just a quick way to see if corruption currently exists, and to inform you if there is corruption. It does not fix anything or create a log. This should be finished almost instantaneous.

/ScanHealth - This switch option does not fix any corruption. It only checks for component store corruption and records that corruption to the log file. This is useful for only logging what, if any, corruption exists. This should take around 5-10 minutes to finish.

/RestoreHealth - This switch option checks for component store corruption, records the corruption to the log file, and FIXES the image corruption using Windows Update. This could take around an hour or more to finish depending on the level of corruption.

Microsoft technical articles:  What is DISMCommand line options Repairing Windows,