Macbook Restart By Itself

Restart your MacBook. Use your MacBook for the period of time that would typically have resulted in a restart. If your MacBook restarts, check the status of your internal RAM and any other hardware. If your MacBook does not restart, turn off your system and reconnect one device at a time per restart to troubleshoot your hardware issue. Even though your Mac is technically shut down, restart Mac once again — the proper way. This will kill the background processes, ensuring your Mac has a healthy startup. Once you power up your Mac after a shutdown, press Command + Alt + Esc to force quit background apps and then put your Mac to sleep, restart, or shut down from the Apple menu. Why does my iPhone SE keep restarting by itself and how to fix it?Apple’s special edition iPhone dubbed as the iPhone SE has been here for over a year now. If restarting issues get bad enough, they can prevent you from using your MacBook entirely — finding a solution is definitely a top priority! Here are the common causes of looping restart issues. After a number of MacBook Pro users complained about their computers randomly shutting down, Apple officially acknowledged the issue and offered an unusual way to fix it. The problem is with the.

System cleanup in one click
Make your Mac fast and secure with CleanMyMac X.

We’ve been taught that Apple devices are a standard of reliability. If you want a stable computer, you get a Mac. If you want a phone that can handle hours of unbreakable connection, you get an iPhone. There’s some truth to it, but it would be wrong to think Apple devices are invincible. If you’ve ever experienced random Mac shutdowns, you know for sure Apple experience is not always flawless.

Worst of all, shutdowns might happen while you’re working on something important. This results in unsaved documents and your work being seriously delayed. In this article, we’ve collected all fixes you’ll ever need if your Mac starts shutting down. It also includes the guide to fixing a 13-inch MacBook Pro misbehavior.

One savior for all Mac issues

Save hours of your time, treating Mac shutdowns, app misbehavior, and other problems with Setapp — 180+ best apps for Mac.

Troubleshooting random Mac shutdowns

Restarting your Mac is always the first idea that should come to mind. And sometimes, it really helps. Even though your Mac is technically shut down, restart Mac once again — the proper way. This will kill the background processes, ensuring your Mac has a healthy startup.

Once you power up your Mac after a shutdown, press Command + Alt + Esc to force quit background apps and then put your Mac to sleep, restart, or shut down from the Apple menu.


Unfortunately, this will hardly prevent your computer from shutting down again. If your computer keeps shutting down, consider SMC and PRAM resetting.

Reset the SMC

The SMC (System Management Controller) is responsible for battery and thermal management as well as any processes related to closing and opening your MacBook lid and pressing the power button. Clearly, it might be a part of the shutdown problem.

There are some differences on how to reset the SMC, depending on the type of computer you own. Pick your device from the list below and try it out.

MacBooks with removable or nonremovable battery

Reset the SMC on Mac laptops with removable battery:
  1. Shut down your Mac.
  2. Remove the battery (if you don’t want to do it yourself, go to the nearest Apple Service Center or Apple Retail Store).
  3. Press and hold the power button for a few seconds.
  4. Reinstall the battery and turn on your computer.
Reset the SMC on Mac laptops with nonremovable battery:
  1. Shut down your Mac from the Apple menu.
  2. Hold Shift + Control + Option + the Power button (or Touch ID button) for about 10 seconds.
  3. Release the keys and turn on your computer.

Mac desktop computers

Here’s how to reset the SMC if you’re an owner of iMac, Mac Mini, Mac Pro, or Xserve. Note that this method works only for desktop computers without the Apple T2 Security Chip.

  1. Shut down your Mac from the Apple menu.
  2. Unplug the power cord and wait for about 15 seconds.
  3. Plug the power cord back in and wait for about another 5 seconds.
  4. Turn on your computer.

Computers that have the Apple T2 Security Chip

Here’s the complete list of Macs with the Apple T2 Security Chip:

  • iMac Pro
  • Mac Pro (2019)
  • Mac mini (2018)
  • MacBook Air (2018 or later)
  • MacBook Pro (2018 or later).

You can also find out whether your computer has the T2 Security Chip by holding Option > Apple Menu > System Information. From there, navigate to Controller or iBridge in the sidebar. You’ll find the answer under “Model Name.”

Here’s how to reset SMC if your computer has the T2 Chip:
  1. Shut down your Mac from the Apple menu.
  2. Hold the power button for about 10 seconds.
  3. Release the power button and wait for a few seconds before turning on your Mac.

If it didn’t work, try shutting down your Mac and then unplug the power cord. Wait for about 15 seconds, plug the power cord back in, and turn on your computer.

Here’s how to reset SMC if your computer doesn’t have the T2 Chip:

The traditional reset method for Macs without the T2 Chip is identical to the one described above. However, if it doesn’t eliminate the problem, you might need to try this one:

  1. Shut down your Mac from the Apple menu.
  2. Press and hold the right Shift key + the left Option key + the left Control key for about 7 seconds.
  3. Once the Apple logo appears on your screen, continue holding Shift, Option, and Control + the Power button for another 7 seconds.
  4. Wait for your Mac to turn off and release the buttons.
  5. Turn on the computer again.

Reset the PRAM

PRAM, or Parameter RAM, is another part of your computer that might be responsible for misbehavior. It stores lots of minor preferences — including those related to the startup disk. Resetting PRAM might be a good way to prevent shutdowns:

  1. Shut down your Mac from the Apple Menu.
  2. Press the Power button and hold Command + Shift + P + R.
  3. Release the keys once you see the Apple logo for the second time, hear the second startup time, or after 20 seconds.

After resetting PRAM, you might need to go to the System Preferences and adjust some of your settings — including volume and display resolution.

Update your macOS

There’s always less likelihood your Mac will be shutting down if you keep the macOS up-to-date. Unless you use 32-bit apps that are unsupported on macOS Catalina and macOS Big Sur, we recommend to upgrade your Mac. You can check for any pending updates in Apple Menu > About This Mac > Software Update.

How to fix 13-inch MacBook Pro shutting down

If you have a Mac Pro with a Touch Bar instead of function keys, there’s a dedicated troubleshooting method for your device. While Apple hasn’t launched the hardware replacement program for this device yet, it’s important you make note of the following:

  1. Discharge your MacBook Pro battery to 90% and below.
  2. Close all open applications.
  3. Connect the charger and switch to the Sleep Mode.
  4. Close the lid and let your Mac Pro charge for about 8 hours.
  5. Turn on your computer and update it to the latest macOS version.

If MacBook keeps restarting

Macbook Restart By Itself

Another issue is your Mac getting into the loop of constant restarting. It might be impossible to trace the reason for such restarts, so make sure you know all the fixes. But before taking any further steps, create a bootable back up of your disk with Get Backup Pro to keep everything you store on your Mac protected.

Disconnect peripheral devices

Make sure no external devices such as hard drives or printers are connected to your Mac. If it’s a desktop computer, you might leave a keyboard, mouse, and a display connected — but nothing beyond that. Turn on your Mac and continue working as usual.

Update software

Quite often, outdated software might cause restarting. Here are a few tips on how to deal with it:

Macbook
  • Update apps if you have any software updates pending.
  • If there’s a particular app causing the problem, contact the developers to help you solve it, or remove the app from Mac.
  • Reinstall third-party apps.

Reinstall macOS

If you’ve exhausted all the update attempts, your next step would be to reinstall macOS from Recovery. You’ll need to erase your startup disk first, but with the data backed up, there’s no need to worry. You can check the instructions on how to reinstall macOS on the Apple Support page.

Keep your Mac healthy and avoid the trouble

In many cases, random shutdowns have their symptoms: Your computer starts slowing down, the fans run at full speed and make loud noise, the apps go unresponsive. The other times, there’s no sign. Nothing. So it’s better to keep your Mac performance controlled so that you be warned whenever something goes wrong.

Tidy up your Mac with CleanMyMac X

CleanMyMac X is a cleaning utility for Mac that makes your machine tidier and therefore faster and stronger. It eliminates all the clutter from your hard drive and operating system in one scan.

Cluttered Mac is generally slower. If there are heaps of apps that haven’t been updated on your Mac, it can also shut down unexpectedly. This is where CMMX comes to help. From old caches to duplicates, CleanMyMac X wipes away everything that might be hampering your progress. The app will tell you about malware threats and let you know if there are any particularly large files you haven’t attended to.

Itself

Prevent future Mac shutdowns

Get iStat Menus to stay in the know about your Mac’s health. So that you never even get close to fixing a shutdown.

Monitor Mac’s health with iStat Menus

Your Mac will give you a hint when it’s not doing well if you have iStat Menus. The app adds tons of Mac health indicators to your menu bar. You’ll be able to control free disk space, instantly see what apps are draining your Mac’s battery, and view active processes. It’s the best way to ensure your computer never even starts misbehaving.

Create bootable backups with Get Backup Pro

We couldn’t emphasize this more: Before running any diagnostics or reset on your Mac, create a bootable backup of your disk. If you accidentally or purposefully delete anything, you’ll be able to get it all back with Get Backup Pro.

While all three utilities mentioned above are pretty pricey if you buy them separately, we recommend to use them via Setapp. It has all of these, plus around 160 other useful Mac utilities for a monthly subscription price starting at $9.99.

Read more about how to run a diagnostic on my mac

If your computer keeps shutting down

Take it to the nearest Apple Service Center. If you’ve tried to force shutdown Mac, reset SMC/PRAM, and update your macOS, but your Mac continues acting naughty, you’ll need to get service for your Mac. Most likely, it will be wiped — so prepare a backup in advance. Anyway, we wish you a long-living Mac and a productive work routine!

Setapp uses cookies to personalize your experience on our website. By continuing to use this site, you agree to our cookie policy.

About unexpected restarts

Rarely, your Mac might experience a software or hardware issue that requires it to restart. When it starts up again, you might see a message that your computer was restarted because of a problem.

Unexpected restarts are usually caused by software installed on your Mac, or by devices connected to your Mac. If the issue causes your Mac to restart every time it attempts to start up, your Mac might eventually shut down. Use the steps below to check the software and hardware on your Mac.

Check your software

If the issue is caused by software on your Mac, one of these steps might help:

  • Install all available software updates.
  • If your Mac suspects that a particular app caused the restart, it might ask whether you would like to move the app to the Trash. Click Move to Trash, then contact the software developer to see if a software update is available.
  • Use safe mode to try to isolate the cause of the issue.
  • Reinstall macOS. If the issue continues after reinstalling macOS, check your hardware.

Check your hardware

Learn how to check your connected devices and other hardware.

Check peripheral devices first

War thunder mig 19. If you don't have any devices attached to your Mac, skip to the next section.

  1. Shut down your Mac.
  2. Disconnect all peripheral devices, such as hard drives or printers. If you have a desktop Mac, make sure that only a display, keyboard, and mouse or trackpad are connected.
  3. Turn on your Mac.
  4. Use your Mac for the amount of time that it would usually take for an unexpected restart to occur.
  5. If an unexpected restart occurs, follow the steps to check the internal RAM and third-party hardware.
  6. If an unexpected restart doesn't occur, turn off the Mac and connect one peripheral device at a time until an unexpected restart occurs.

Check RAM and third-party hardware

Certain models of Mac computers have removable memory (RAM). If you recently installed memory or a hard disk (or SSD), make sure that it's compatible and installed correctly. If possible, remove it and test with the original memory or disk.

Mac

Macbook Reset Itself To Factory Settings

Learn more

Mac Mini Restarts By Itself

  • If you continue to experience unexpected restarts, contact Apple Support.
  • If your Mac is frequently restarting unexpectedly, it's important to determine the exact steps that lead up to the issue. The next time that your Mac restarts unexpectedly, record the date and time it occurs. These questions might help you diagnose the problem:
    • Was the computer starting up, shutting down, or performing a particular task when the unexpected restart happened?
    • Is the computer restart random, or does it happen every time you do a certain task?
    • Does the restart happen when a specific external device is connected to your Mac or to a specific port?
  • Learn what to do if your Mac doesn't turn on or start up.
  • Learn about the screens you see when your Mac starts up.