Using Dism /Online /Cleanup-Image /RestoreHealth to fix corrupt System Files

I need help using Dism /Online /Cleanup-Image /RestoreHealth to fix corrupt system files. I tried sfc/scannow, and it said it found corrupt system files, but can't fix them. I then proceeded to look up this issue, and it told me to use the Dism command. Here is the error that I got:

Error: 0x800f081f
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

Keep in mind that I'm repairing my actual system, not an ISO.

Please help me!

Looking at the logs, shows that 1 file is damaged:

(p) CSI Payload Corrupt x86_microsoft-windows-w..ywmdmshellextension_31bf3856ad364e35_10.0.14393.0_none_5f441c558cd56176\audiodev.dll

10.0.14393.0 is the Anniversary update of Windows 10, so get a clean ISO, double click on the ISO to mount the ISO and run

Dism /Online /Cleanup-Image /RestoreHealth /source:wim:D:\sources\install.wim:1 /limitaccess

(where D: is your mounted Win10 1607 ISO)

Now DISM can fetch the required audiodev.dll from the install.wim.