Your running windows pe? ( Windows Preinstallation Environment - Wikipedia )dism.exe /Online /Cleanup-Image /RestoreHealth /Source:C:/Repair/Source/Windows /LimitAccess get error 50 dism does not support servicing windows pe with the .online option
Hmm... What version of windows is it, Home or Pro and where did you get it?thought I could use it as I used the full windows DvD