It may take from 30 minutes to a couple of hours to scan and fix all windows system files. It will work fastest if you do not use the computer during this process. You may continue to use the PC, but performance will be very slow.
- Follow any instructions that the SFC program gives you
- When the SFC program has finished, the Run window will close.
Once complete, you may resume your other activities.
For more ways to optimize your Windows computer, also read Top 8 Ways to Speed Up Your Computer.


