The Three Ways to Restart Your Laptop

A restart closes every program running on your laptop and boots the operating system fresh. The fastest way depends on whether your laptop is responding to commands. If your screen is working and you can move the cursor, use the menu restart. If the screen is frozen or the cursor won't move, use the keyboard shortcut. If neither works, hold the power button until the machine shuts down completely, then press it again to turn it back on.

Each method takes a different amount of time and carries different risks. A menu restart is safest because it gives programs a chance to save their work. A keyboard restart works when the menu is locked up. A forced shutdown is fastest but can corrupt files if a program was writing to disk when you cut the power.

Key Takeaways

  • A menu restart on Windows uses Settings > System > Power, and on Mac uses the Apple menu > Restart.
  • The keyboard shortcut Alt+F4 closes the active window on Windows; Command+Q closes it on Mac, and Command+Control+Power forces a restart on older Macs.
  • Holding the power button for 10 seconds forces a shutdown when the screen is completely frozen and keyboard shortcuts do not work.
  • After a forced shutdown, wait 30 seconds before pressing the power button again to let the hardware cool and reset.
  • A restart usually takes 30 seconds to 2 minutes depending on how many programs were open and how much disk activity is happening.

Restarting from the Menu on Windows

Open the Start menu by pressing the Windows key or clicking the Windows logo in the bottom left corner. Type "restart" into the search box. Click "Restart your PC" or "Restart options" depending on which version of Windows you have.

A dialog box will appear asking you to confirm. Click "Restart" to proceed. Windows will close all open programs and save any unsaved work if the programs support it — not all do. The screen will go black, and you will see the Windows logo. The laptop will then boot back into Windows, which usually takes 30 seconds to 2 minutes.

If you want to restart but give yourself time to save work first, you can also go to Settings > System > Power & Sleep > Power Button and Lid Settings, then choose what happens when you press the power button. This does not restart when ready but lets you plan ahead.

Restarting from the Menu on Mac

Click the Apple menu in the top left corner of the screen. Select "Restart" from the dropdown menu. A dialog box will appear asking you to confirm. Click "Restart" to proceed.

macOS will close all open programs. If any program has unsaved work, it will ask you whether to save before closing. The screen will go black, and you will see the Apple logo. The laptop will then boot back into macOS, which usually takes 30 seconds to 2 minutes.

If you want to restart automatically at a scheduled time, you can set this in System Settings > General > Shut Down. This is useful if you want the laptop to restart overnight when nobody is using it.

Using the Keyboard Shortcut When the Menu Is Frozen

On Windows, press Alt+F4 to close the active window. If the entire desktop is frozen and Alt+F4 does not work, press Ctrl+Alt+Delete. A menu will appear with options including "Sign Out" and "Restart". Click "Restart" to proceed. The laptop will shut down and restart without using the Start menu.

On Mac, press Command+Q to close the active program. If the entire screen is frozen, press Command+Control+Power (on older Macs) or Command+Control+Eject (on Macs with an Eject key). The laptop will restart when ready without asking for confirmation. On newer Macs with Touch ID, you may need to hold Command+Control+Power for several seconds.

These shortcuts work even when the mouse is frozen or the menu is not responding. They are faster than a forced shutdown and safer because the operating system still has a chance to close files properly.

Forcing a Shutdown When Nothing Else Works

If the screen is completely black or frozen and keyboard shortcuts do not work, locate the power button. On most laptops it is on the side or the back edge. Press and hold the power button for 10 to 15 seconds without releasing. The laptop will shut down completely, and the screen will go dark.

Wait 30 seconds. This gives the hardware time to cool and the capacitors to discharge. Then press the power button once to turn the laptop back on. The screen will show the manufacturer's logo, and the operating system will boot normally.

A forced shutdown can corrupt files if a program was writing to disk when you cut the power. Use it only when the keyboard and menu are both unresponsive. After a forced shutdown, your laptop may run a disk check the next time it boots — this is normal and takes a few minutes.

What Happens During a Restart

When you restart, the operating system closes every program and every background process. It writes any cached data to the hard drive or solid-state drive. It then shuts down the kernel — the core of the operating system — and powers down the hardware.

After a few seconds, the power button lights up again, and the boot process begins. The BIOS or UEFI firmware runs a hardware check. The bootloader loads the operating system kernel into memory. The kernel starts system services and background processes. Finally, the login screen appears, and you can enter your password.

This process clears the RAM, which is why a restart often fixes problems caused by memory leaks or stuck processes. It also gives the hard drive a chance to finish any pending writes and repair any file system errors.

When to Restart Instead of Shutting Down

A restart is different from a shutdown. A shutdown closes everything and powers off the hardware completely. A restart closes everything, powers off, and then powers back on when ready. A restart is useful when a program is frozen, when you have installed updates that require a reboot, or when the laptop is running slowly and you want to clear the RAM.

Restart your laptop after installing Windows or macOS updates, after installing new software that modifies system files, or after you notice the cursor is slow or programs are taking longer to open. You do not need to restart every day — modern operating systems are designed to run for weeks without a restart — but a restart once a week or once a month keeps the system responsive.

If you are not sure whether to restart or shut down, restart. It takes the same amount of time as shutting down and turning the laptop back on, and it is more likely to fix the problem you are experiencing.

Frequently Asked Questions

Will restarting delete my files or lose my work?

A menu restart will not delete files. It will close all programs, and any unsaved work in those programs will be lost unless the program has an auto-save feature. Always save your work before restarting. A forced shutdown carries a small risk of file corruption if a program was writing to disk at the moment you cut the power, but this is rare on modern laptops.

How long does a restart take?

A typical restart takes 30 seconds to 2 minutes from the moment you click Restart until the login screen appears. The time depends on how many programs were open, how much data is on the hard drive, and whether the operating system is running a disk check. If the restart takes longer than 5 minutes, something may be wrong — try a forced shutdown and restart again.

Can I restart my laptop while it is plugged in?

Yes. Restarting while plugged in is safe and actually preferable because the battery will not drain during the restart. If your laptop is running on battery, the restart will use a small amount of battery power, but not enough to cause problems unless the battery is already very low.

What is the difference between restart and sleep mode?

Sleep mode puts the laptop into a low-power state where programs stay open in memory but the screen and hard drive turn off. A restart closes all programs and clears the RAM. Sleep mode is faster to wake from, but a restart fixes more problems. Use sleep mode if you are stepping away for a few minutes. Use restart if a program is frozen or the laptop is running slowly.

Do I need to restart after installing software?

Most programs do not require a restart. Windows and macOS updates almost always do. If the installer asks whether to restart, click yes. If it does not ask, you usually do not need to restart. If you install a program and it does not work correctly, try restarting — it often fixes the problem.