MacOS Sierra Crashes – Learn What Causes your OS to Crash Repeatedly and How to Fix the Issue Permanently


MacOS Sierra – the latest version of Apple’s operating system, introduces several new features such as voice assistant Siri, universal clipboard, new version of iTunes, a new synchronization feature that automatically stores your rarely used files online, and many more.

Does your MacOS Sierra repeatedly crash? This article will describe several ways to troubleshoot the core issue and fix frequently crashing MacOS Sierra.

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Recover Entire Mac Using TimeMachine Backup

Apple’s TimeMachine provides an easy way to backup and restore your Mac. Not only does TimeMachine provide a continual backup of your data, it also provides an effortless way to restore your system or files.

1. Plug the device that contains your entire Mac Time Machine backup.

2. Click the Apple menu, select Restart.

3. Before your operating system starts booting, press and hold the Command + R keys.

4. You should see the OS X Utilities, a recovery environment.

5. Select the option Restore from Time Machine Backup, and then click Continue.

6. Choose the external drive you already connected.

7. Select a recent date and time to restore the entire operating system.

8. Click Continue.

Reset the NVRAM

NVRAM stands for Non-Volatile RAM, which is used to store certain system and application settings for quick access. These settings include start-up disk selection, audio configurations, video resolution, and recent kernel panic logs.

1. Click the Apple menu, select Shutdown.

2. Confirm the same in the new prompt.

3. Start your MacBook and immediately press and hold the Option + Command + P + R keys for about 15-25 seconds.

Use Apple Diagnostics

Apple Diagnostics, also known as Apple Hardware Test, determines causes of various problems in your system and displays them on your screen. MacOS Sierra crashes may occur due to problems with internal hardware components, problem with the memory, faulty hardware, and so on.

1. Power-off your Mac.

2. Unplug all the peripheral devices externally connected to your computer, such as, AC power, mouse, USB Wi-Fi, keyboard, and so on.

3. Start your MacBook. Press and hold the D key of your keyboard.

4. When you’re prompted to select the preferred language, select English.

5. You should see a progress bar which may remain on your screen for up to five minutes.

6. Apple Diagnostics will detect problems in your computer and list the possible issues such as problem with the on-board memory, power adapter or Wi-Fi network.

Turn Off Firmware Password Protection

Firmware refers to that memory which is read-only in nature, and cannot be rewritten by user. In simple words, the Firmware memory is permanent. If you had activated the Firmware password protection during the Mac installation, turn it off.

1. Reboot your Mac.

2. Press and hold the Command + R keys simultaneously before the operating system starts booting up.

3. Choose the preferred language.

4. Click the Utilities menu on the system menu.

5. Select Firmware Password Utility.

6. Click the button named Turn off Firmware Password.

7. You’d be prompted to enter the existing Firmware password. Type it, click Turn off Firmware Password.

8. Reboot your MacBook.

Use the Safe Mode

The Safe Mode, much similar to that in the Windows, loads your operating system into a limited functionality mode. It disables all those features that might conflict with the OS components, and cause it to crash unexpectedly.

It completely disables all log-in items, prevents loading of unwanted Kernel extensions, user-installed fonts, various caches –temporary memories stored for quick-use, and checks for disk errors such as hard drive damage.

1. Shut down your Mac, and start it again.

2. Press and hold the Shift key immediately.

3. The Apple logo should appear on your screen. Release the key, and wait for a moment.

4. You might be prompted to enter a valid password if you’ve activated the disk encryption feature.

Reset the SMC

System Management Controller (SMC) is a crucial circuit in your MacBook that monitors status lights, backlights and the fans in order to control the excessive heat. A temporary glitch in your SMC could cause operating system crashes. Resetting the SMC to system defaults might be helpful.

For MacBooks with Removable Batteries

1. Power-off your Mac.

2. Unplug the power cord of your Mac.

3. Remove the battery, wait for 15 seconds, and re-connect it back.

4. Switch on the computer.

For MacBooks with Non-Removable Batteries

Some models such as MacBook Air, MacBook Pro, MacBook (late 2009) do not have removable batteries. You may not be able to perform this procedure. In such cases, you might want to power off your machine, press and hold the Control + Shift + Option on the left side of your keyboard. Release the keys after 15 seconds. Turn on your machine.

For Mac Desktops

1. Power off your desktop and unplug the power cord.

2. Wait for 20 seconds, and plug it back.

3. Wait for a moment and press the Power button to turn on your computer.


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