Restart your computer, do not just shut it down

A restart clears problems that shutting down can leave behind.

Updated September 21, 2026

On many Windows computers, Shut down does not fully turn the computer off. A feature called Fast startup saves part of the system to disk so the computer starts quicker next time. That means a problem can survive a shutdown and come back when you sign in. Restart always starts fresh.

How to restart

  1. Save your work and close your programs.
  2. Select the Start button, then the Power button.
  3. Choose Restart.

How often to restart

  • At least once a week.
  • Any time a program acts strangely, before you call us.
  • When Windows asks you to after updates. Waiting for days leaves updates half finished.
Good to know

Closing a laptop lid or choosing Sleep does not count as a restart.