The three ways to restart your computer

A restart clears your computer's memory, closes programs that may be stuck, and often fixes slowness or freezing without any damage to your files. You have three options: a normal restart through the menu, a forced restart when the computer won't respond, and a hard shutdown as a last resort.

The normal restart is always your first choice because it lets your operating system close programs cleanly. A forced restart is safe to use when your computer is completely frozen and won't respond to keyboard or mouse. A hard shutdown—holding the power button until the computer goes dark—should only happen if nothing else works, because it can occasionally cause file corruption.

Key Takeaways

  • A normal restart through your operating system menu is the safest method and should be your first choice whenever your computer is responding.
  • If your computer is frozen and won't respond to clicks or keyboard input, use Ctrl+Alt+Delete on Windows or Command+Control+Power on Mac to force a restart.
  • Holding the physical power button until the screen goes black is a last resort only—use it when forced restart options don't work.
  • After any restart, wait for all startup programs to finish loading before opening new applications, which usually takes one to three minutes.
  • If your computer freezes regularly, the problem is usually too many programs running at once, a full hard drive, or malware—not the restart process itself.

Normal restart on Windows

Click the Start button in the lower left corner, then click the power icon (a circle with a line at the top). Select "Restart" from the menu that appears. Windows will close all open programs and restart automatically.

If you have unsaved work, Windows will ask you to save it before restarting. If a program is frozen and won't close, Windows may ask whether you want to force close it—click "Force close" and Windows will shut it down anyway. The restart usually takes two to three minutes from the moment you click Restart until you see the login screen again.

Normal restart on Mac

Click the Apple menu in the upper left corner, then select "Restart." A dialog box will appear asking you to confirm. Click "Restart" again. Mac will close all open programs and restart automatically.

If you have unsaved work, most Mac programs will ask you to save before closing. If a program is frozen, you can force close it by holding Command and pressing Q, or by using Force Quit (Command+Option+Escape). The restart usually takes two to three minutes until you see the login screen.

Forced restart when your computer is frozen

If your computer is completely frozen and won't respond to mouse clicks or keyboard input, use a forced restart. On Windows, hold Ctrl+Alt+Delete at the same time. A menu will appear—click "Sign out" or "Restart" depending on what you see. If that doesn't work, hold Ctrl+Alt+Delete again and look for "Task Manager"—click it, find the frozen program in the list, click it once to select it, then click "End Task" at the bottom right.

On Mac, hold Command+Control+Power at the same time. The computer will restart when ready without asking for confirmation. If that doesn't work, hold Command+Option+Escape to open Force Quit, click the frozen program, then click "Force Quit."

A forced restart is safe to use as often as you need—it does not damage your files or your operating system. It straightforward stops everything running and starts fresh.

Hard shutdown as a last resort

If forced restart doesn't work and your computer is still completely unresponsive, locate the physical power button on your computer or laptop. Hold it down for 10 to 15 seconds until the screen goes completely black and all lights turn off. Wait 30 seconds, then press the power button once to turn the computer back on.

A hard shutdown should only be used when nothing else works, because the operating system doesn't get a chance to close programs cleanly. In rare cases this can cause file corruption or loss of unsaved work. However, it will not permanently damage your computer—it is straightforward a forced power-off.

What to do after your computer restarts

After your computer restarts and you log back in, wait two to three minutes before opening new programs. During this time, Windows or Mac is loading startup programs in the background—opening applications too quickly can slow things down or cause freezing again.

If you notice the restart fixed the problem only temporarily and your computer is freezing again within hours or days, the issue is usually one of three things: too many programs running at startup, a hard drive that is nearly full, or malware. Check your startup programs by opening Task Manager on Windows (Ctrl+Shift+Escape) or Activity Monitor on Mac (Command+Space, type "Activity Monitor," press Enter). Look for programs you don't recognize or don't need, right-click them, and select "Disable" or "Quit." If your hard drive is full, delete old files or programs you no longer use. If you suspect malware, run a full antivirus scan.

When to restart versus when to call for help

A restart fixes most temporary freezing, slowness, and unresponsive program problems. If your computer freezes multiple times per week even after restart, or if it won't start up at all after a restart attempt, the problem is likely hardware-related or a sign of malware, and you should take it to a repair technician or contact your computer manufacturer's support line.

If you are uncomfortable holding down the power button or using keyboard shortcuts, ask someone with computer experience to do it for you—there is no risk of damage, and it takes less than a minute.

Frequently Asked Questions

Will restarting my computer delete my files?

No. A restart closes programs and clears memory, but all your files remain on your hard drive. Unsaved work in open programs will be lost, but the programs themselves and your documents folder are unaffected.

How often is it safe to restart my computer?

You can restart as often as you need. Restarting multiple times per day is safe and will not damage your computer. If you find yourself needing to restart more than once per week to fix freezing, something else is wrong and you should investigate startup programs or malware.

What's the difference between restart and shutdown?

Shutdown turns your computer completely off. Restart turns it off and when ready turns it back on. For fixing freezing or slowness, restart is better because it clears memory and reloads the operating system fresh.

Can I restart my computer while it's updating?

No. If Windows or Mac is installing an update, let it finish before restarting. Interrupting an update can cause serious problems. If an update seems stuck, wait at least 30 minutes before assuming it has frozen, because large updates can take a long time.

Is a forced restart the same as a hard shutdown?

No. A forced restart uses keyboard shortcuts to tell the operating system to restart cleanly. A hard shutdown holds the power button and cuts power completely. Forced restart is safer and should always be tried first.