Running SFC Scan

Using System File Checker

System File Checker, or 'SFC' for short, is a built-in Windows tools that checks for system files that may be corrupt or missing.

Running a Command Prompt

If you are on Windows Vista or Windows 7:

  • Go to "Start" and search "cmd"
  • Right click on the first item and press "Run as an administrator".
  • You may receive a UAC prompt; confirm it.

If you are on Windows 8 or above:

  • Go to "Start" and search "cmd"
  • At the first option, "cmd" right click it and in the bottom menu choose "Run as an administrator"
  • You may receive a UAC prompt; confirm it.

If you are on Windows XP:

  • Log into an administrator user account, if you are not already in one.
  • Hold your Windows key and press 'R'.
  • In the run prompt, type in "cmd" and press OK.

Running System File Checker

Once you've opened an administrative Command Prompt window, run the command:


sfc /scannow

Your window should be similar to this:


Press Enter and let the command run, this will take a while. When the scan is complete, you are given results through the console.

After this is complete, you will have to restart the computer for the changes to take effect.