On one reboot, my start menu disappeared. SFC found corrupt files, DISM was unable to fix it.
And, the Windows Update displayed "in the middle of an update"
Now, when I go to Settings->Update, the screen closes before displaying any information.
Unfortunately my system does not have a restore point (it wasn't on until now).
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PS C:\WINDOWS\system32> sfc /scannow
Beginning system scan. This process will take some time.
Beginning verification phase of system scan.
Verification 100% complete.
Windows Resource Protection found corrupt files but was unable to fix some
of them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For
example C:\Windows\Logs\CBS\CBS.log. Note that logging is currently not
supported in offline servicing scenarios.
PS C:\WINDOWS\system32> dism /Online /Cleanup-Image /RestoreHealth
Deployment Image Servicing and Management tool
Image Version: 10.0.10586.0
The source files could not be found.
Use the "Source" option to specify the location of the files that are required to restore the feature. For more information on specifying a source location, see http://go.microsoft.com/fwlink/?LinkId=243077.
The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log