How to repair system with Windows 11 Command Prompt

1. Launch Command Prompt

• After pressing the “Windows” key on your keyboard, press ” cmd “.
• When the search screen appears, click “Run as administrator” in Command Prompt.

*This operation is the same as entering “cmd” in the search. 

2. Repair system files

Type sfc /scan now and press Enter on your keyboard.
It will start checking and repairing system files. It may take some time depending on the environment, but wait until it finishes. end of command

• Successful completion:
  The screen displays “(…, no integrity violations were detected.) No corrupted system files were detected” or “…successfully has been repaired.” is displayed.
  *The figure below shows the screen where the problem was detected and the repair is completed.
  *The figure below shows the screen where no problem was detected.
• Unsuccessful completion:
  The screen displays “… was not repaired” or “… operation could not be performed”.

3. Repair system image

The “Dism Online” command allows you to restore the system image using data from the cloud (Internet). 

Check system image

Type Dism /Online /Cleanup-Image /ScanHealth and press Enter on your keyboard.
This task may take quite some time, so just wait until it finishes.
* Don’t forget the blanks.
Dism (blank) Online (blank)/Cleanup-Image (blank)/ScanHealth
If there is an error in the blank, an error will occur and execution will not be possible.When the check is complete and you see a message such as “…can be repaired” or “…corruption not detected” , then run a repair. 

Restore system image from cloud

Type Dism /Online /Cleanup-Image /Restorehealth and press Enter on your keyboard.
 The repair is complete when the message “Restore operation completed successfully” is displayed.

This completes the system image repair operation, but it will check the system files one last time. Run Check System Files Again
Run “Check System Files” again to complete system repair in Command Prompt.
Next, remove unnecessary system data. This is not required, but we recommend removing it.

4. Clean up system data

System data cleanup deletes unnecessary data, files, drivers, etc. due to updates, etc. Type Dism /online /cleanup-image /startcomponentcleanup and press Enter on your keyboard. This operation will take some time, but just wait until it finishes.
 Cleanup is complete when you see “The operation completed successfully.”

• If “Reserved by system (C:)” and “Local disk (D:)” are displayed, the drive letter where Windows 11 is installed is “D: “ .
  “offbootdir=C:\” path is “C”, so “offwindir=D:”.
• If “System Reserved” is not listed, the path is ” C: “.
  “offbootdir=C:\” path is “C”, so “offwindir=C:”.
• If “System Reserved” is ” D: ” and your local disk is ” C: “.
  “offbootdir=D:\” path is “C”, so “offwindir=C:”.

Just to be sure, check the contents of the disk.
Double-click the disk you want to check, and if there is a “Windows” or “Users” folder inside, you’re good to go.
After confirming, click the “x” close button to close Explorer and Notepad. 

2. (Repair function) Repair system files

Type sfc /scannow /offbootdir=C:\ /offwindir= D: \windows and press Enter on your keyboard.sfc(blank)/scannow(blank)/offbootdir=C:\(blank)/offwindir= D: \windowsBe
careful with the space characters
Scanning and repairing will begin. It will take some time , but just wait.

Even if “Restored” is displayed, execute “Repair system image” in the next section.

3. (Repair function) Repair system image

Scan system image

Type Dism /image: D: \ /cleanup-image /scanhealth and press Enter on your keyboard. “Beware of whitespace characters” This work will take quite a while, but wait until it finishes.
When the scan is complete, you will see something like “…can be repaired” or “…no damage detected.”
Regardless of what the message says, run System Image Repair next. 

Repair system image

Type Dism /image: D: \ /cleanup-image /restorehealth and press Enter on your keyboard. This task can take quite some time, so just wait until it finishes.
The repair is complete when you see “Restore operation completed successfully”.
If an error occurs and cannot be repaired, go back to the beginning and try to repair by executing the “Repair system files” command. This completes the system image repair operation, but runs the system file check one last time.