Using System File Checker in Windows 10
https://support.microsoft.com/help/4027667/windows-10-update
2In the search box on the taskbar, type Command Prompt, and right-click or press and hold Command Prompt (Desktop app) from the list of results. Select Run as administrator, and then select Yes. 3Type DISM.exe /Online /Cleanup-image /Restorehealth (note the space before each "/"), and then press Enter. (Note: This step may take a few minutes to start and up to 30 minutes to complete.) 4After you see a message that says "The operation completed successfully," type sfc /scannow (note the space between "sfc" and "/") and press Enter. 5After you see a message that says, "Verification 100% complete," type exit.
2In the search box on the taskbar, type Command Prompt, and right-click or press and hold Command Prompt (Desktop app) from the list of results. Select Run as administrator, and then select Yes.
3Type DISM.exe /Online /Cleanup-image /Restorehealth (note the space before each "/"), and then press Enter. (Note: This step may take a few minutes to start and up to 30 minutes to complete.)
4After you see a message that says "The operation completed successfully," type sfc /scannow (note the space between "sfc" and "/") and press Enter.
5After you see a message that says, "Verification 100% complete," type exit.
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