I have a similar problem and the command returned this error:
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 Configure a Windows Repair Source.
The DISM log file can be found at C:\Windows\Logs\DISM\dism.log
Which version is your Windows 10 ?
Is it 10586.318 or 10586.218 ?
If you have 10586.218, there is problem in sfc /scannow which will give you " corrupt files found but unable to do repair " message no matter what.
Microsoft is aware of the issue and is said to be working on it.
Please read this thread:
In the new version, 10586.318, that sfc issue appears to have been fixed. At least it is fixed in my computer.
To find out which Win 10 version you have:
In the search box, type winver > Enter.
If so, please do a Repair Install...................
Go back to the folder where the iso file is saved at > right click at it > click Mount > click Setup.exe.
Follow the prompts.
You are allowed to keep your files, settings and apps.
No product key is required.
Activation is automatic.