repair windows 8 command prompt

Run DISM (Windows 8 and higher) Windows 8, Windows 8.1, and Windows 10 users, you will need to run the Deployment Image Servicing and Management (DISM) tool before launching SFC. Note: Windows 7 users can skip ahead to the next step. In the Command Prompt, type the following command then press enter: DISM.EXE /ONLINE /CLEANUP-IMAGE /RESTOREHEALTH disable fast boot windows 8