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A MacBook that keeps shutting down unexpectedly can be frustrating. This issue can arise due to software glitches, overheating, battery problems, or hardware failures. Identifying the root cause is crucial to resolving the problem. Below, we provide effective solutions and step-by-step troubleshooting to help you fix your MacBook.

Why Does Mac Keep Shutting Down Randomly? (7 Ways to Fix It)

You Can Fix MacBook Keeps Shutting Down in Many Ways. Here Are Some Solutions:

Issue

Solution

Step-by-Step Troubleshooting

Overheating

Ensure proper ventilation and cooling

Use Mac in a cool place with clean vents

Battery Problems

Check battery health and replace if necessary

Apple Menu > About This Mac > System Report > Power

Power Supply Issues

Use an Apple-certified charger

Ensure adapter and cable are working properly

Software Glitches

Update macOS to the latest version

System Settings > Software Update and install updates

Faulty Applications

Uninstall incompatible or crashing apps

Identify problematic apps in Activity Monitor and remove them

Malware or Viruses

Scan system for malware

Use built-in macOS security or trusted antivirus software

Hardware Issues

Check for faulty components

Run Apple Diagnostics by restarting and holding the D key

System Corruption

Reinstall macOS

Boot into macOS Recovery and reinstall the OS

Incorrect Sleep Settings

Adjust sleep settings to prevent shutdowns

System Settings > Lock Screen > Customize sleep settings

SMC Reset (For Power Issues)

Reset the System Management Controller (SMC)

For T2 Chip Macs: Shift + Control + Option + Power (10 sec)

For Apple Silicon Macs: Restart + Hold Power Button

PRAM Reset (For System Issues)

Reset PRAM to restore system settings

Shut down > Hold Command + Option + P + R > Power on

Persistent Issues

Seek professional help

Contact Apple Support or visit an authorized repair center

Fix MacBook Keeps Shutting Down by Completing a Proper Shutdown

One of the simplest ways to resolve this issue is by shutting down the Mac properly instead of forcing it to turn off. A proper shutdown can help clear temporary glitches. Follow these steps:

  1. Turn on your MacBook.

  2. Ensure all apps are functioning correctly.

  3. If an app is unresponsive, press Control + Option + Esc to force quit it.

  4. Click on the Apple menu in the top-left corner.

  5. Select Shut Down and wait for the system to power off completely.

  6. Wait for the device to turn off.

  7. After a few seconds, turn it back on again.

2. Remove Malware to Prevent MacBook Shutdown

Malware infections are a common reason behind sudden MacBook shutdowns. These malicious programs can compromise system stability and even lead to data breaches. To prevent this:

Find and get rid of malware with CleanMyMac

3. Close High CPU Usage Apps in Activity Monitor

Overheating due to high CPU usage can cause unexpected shutdowns. To manage CPU-heavy apps:

  1. Open Finder.

  2. Click Go in the menu and select Utilities.

  3. Launch Activity Monitor.

  4. Select the CPU tab.

  5. Sort processes by % CPU to find resource-intensive apps.

  6. Identify apps consuming excessive power.

  7. Click X to quit any unnecessary applications.

4. Reset SMC to Fix MacBook Shutdown Issue

Resetting the System Management Controller (SMC) can help troubleshoot power-related issues. The process varies depending on your Mac model:

For Macs with T2 Chips:

  1. Shut down your Mac.

  2. Press and hold the right Shift, left Option, and left Control keys.

  3. While holding these keys, press and hold the Power button.

  4. Release all keys after a few seconds.

  5. Turn on your Mac.

For Apple Silicon Macs:

  1. Restart your Mac.

  2. Press and hold the Power button.

  3. Ensure the power cord and MagSafe adapter are securely connected.

5. Adjust Sleep Settings to Prevent Unexpected Shutdowns

Incorrect sleep settings might cause your MacBook to shut down unexpectedly. Adjusting these settings can help:

  1. Click on the Apple menu.

  2. Select System Settings.

  3. Navigate to Lock Screen from the left-hand menu.

  4. Customize sleep settings based on your preferences.

Lock Screen Options

6. Reset PRAM to Fix MacBook Shutdown Issues

PRAM stores essential system settings, and resetting it can resolve shutdown-related problems. Follow these steps:

  1. Click on the Apple menu and select Shut Down.

  2. Once off, press and hold Command + Option + P + R.

  3. Keep holding these keys and press the Power button.

  4. Release the keys when you hear the startup sound.

7. How to Update macOS to the Latest Version on MacBook

Keeping your macOS updated reduces the chances of unexpected shutdowns. Follow these steps to update your MacBook to the latest version:

  1. Click on the Apple menu.

  2. Select System Settings.

  3. In the left sidebar, choose General, then click Software Update on the right.

  4. If an update is available, download and install it.

8. Reinstall macOS to Fix MacBook Keeps Shutting Down Issue

If your MacBook continues to shut down unexpectedly, reinstalling macOS may resolve the issue. You can do this by entering Recovery Mode, but the steps differ based on your Mac model.

For Intel-based Macs:

  1. Click on the Apple menu and select Restart.

  2. Press and hold Command (⌘) + R.

  3. Release the keys when the Apple logo appears.

For Apple Silicon-based Macs:

  1. Click on the Apple menu and select Restart.

  2. Press and hold the power button.

  3. When the startup options window appears, release the button.

  4. Click Options and select Continue.

Once in Recovery Mode, select Reinstall macOS and follow the on-screen instructions.

Experiencing data loss due to sudden shutdowns can be stressful. To prevent this, it’s always best to keep a backup of your important files. However, if you don’t have a backup, you can still recover lost data using professional recovery software.

Still facing issues? Get expert  If your MacBook Air keeps shutting down, don’t worry; we’re here to help. From expert diagnostics and repairs to battery and power fixes, we specialize in macOS troubleshooting and optimization to get your device running smoothly again. Contact MacRepair at 0800 585 222 for professional assistance

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