MacBook Pro Keeps Restarting When Closed: How to Fix the Issue

Table of Contents

Why Your MacBook Pro Keeps Restarting When Closed – Causes, Diagnoses, and Fixes

I. Introduction

A. Explanation of the problem

If you own a MacBook Pro, you may have experienced an issue where your laptop restarts unexpectedly whenever you close the lid. This can be frustrating, especially if you lose unsaved work and time. If you continue to use your MacBook Pro with this issue, it can damage the hardware or lose data.

B. Importance of the problem

MacBooks are known for their reliability and functionality, and this unexpected behavior is uncommon. However, when it happens, the reasons could range from something straightforward to more complex issues that may require professional help. This article will explore the possible reasons and solutions.

C. Brief overview of the article

The article will cover the probable causes, diagnoses, and solutions of MacBooks that restart when closed. It will provide practical tips on how to fix the issue and maintain your MacBook to prevent it from happening again.

II. Causes of MacBook Pro restarting when closed

A. Software issues

1. Outdated system software

Your MacBook OS needs constant updating to improve its functionality and ensure it operates seamlessly. Having outdated software can cause your MacBook to behave differently than expected, including restarting when closed.

2. Incompatible apps

Apps are an essential element for user experience, but some may have negative impacts that lead to your MacBook behaviors. When an app is incompatible with the OS, it may conflict with other software and cause your MacBook to restart.

3. Software bugs

Software bugs are issues in the code that cause errors and unexpected behavior when the code runs. It can lead to your MacBook restarting when closed.

B. Hardware issues

1. Faulty power management unit

The power management unit on your MacBook Pro is responsible for managing and regulating the power flow in the hardware. A malfunctioning power management unit can cause power-related problems such as unexpected shutdowns.

2. Damaged hard drive

On a MacBook, when the hard drive is damaged, it can result in various issues. It may cause the system to reboot or freeze, and if it continues to happen, it could result in loss of data.

3. Damaged logic board

The logic board is responsible for managing and integrating various system peripherals to ensure they work together seamlessly. When a logic board is damaged, it may cause your MacBook to behave erratically.

III. Diagnosing the Problem

A. Steps to follow to diagnose the problem

To diagnose a MacBook that restarts when closed, start by taking note of when the reboot happens. If it occurs at a specific time, when a specific app runs, or when data is transmitted, it could be a software issue. If it happens randomly or when dealing with heavy applications, it might be hardware-related.

B. Use of diagnostic tools to diagnose the problem

MacBooks have diagnostic tools that can help you pinpoint the cause of the issue. Go to the Apple Menu and then select About this Mac, navigate to the System Report section, and click Power. This section provides an overview of your MacBook’s power management settings and system sensors that help diagnose hardware problems.

IV. Solving the Problem

A. Software Solutions

1. Updating the system software

Ensure your software is up to date. Check the Mac App Store for any updates or go to System Preferences and select Software Update to get the newest version of the OS.

2. Uninstalling incompatible apps

Uninstall any apps that cause problems, and then restart your MacBook. This will ensure that all background processes close, and your software operates smoothly.

3. Troubleshooting software bugs

If troubleshooting software bugs is too complex, consider reinstalling your MacBook. It returns it to its factory default state and often fixes latent errors in the software.

B. Hardware Solutions

1. Replacing the power management unit

When the problem is power-related and the battery and charger are working, consider replacing the power management unit.

2. Replacing the hard drive

If you have a problem with the hard drive, consider replacing it with an SSD (Solid State Drive) for faster operating speeds and better reliability.

3. Replacing the logic board

If the logic board is damaged, a replacement may be necessary to fix the problem.

V. Prevention measures

A. Tips to prevent the problem from occurring

To prevent issues with your Mac, adopt the following practices:
– Perform regular backups of your data
– Use anti-virus software to prevent malware infections
– Avoid using your MacBook on a soft surface to prevent overheating
– Uninstall unnecessary software
– Use compatible apps

B. Regular maintenance tips to avoid the problem

– Periodically clean up your hard drive
– Check your battery health regularly
– Defragment your hard drive

VI. Conclusion

A. Summary of the article

MacBooks are designed to run without a hitch, but if it restarts when closed, take that seriously, as it’s a sign that there is something wrong. The article explored the several causes, diagnoses, and fixes, and prevention measures to keep your MacBook running smoothly.

B. Advantages of applying the solutions outlined in the article

By applying the solutions suggested in this article, you will have a fully functional MacBook that operates without interruption. You will prevent data loss and hardware damage, and because of the maintenance practices, which will result in an excellent user experience.

C. Final thoughts on the topic

If the described solutions do not work, take your MacBook to an Apple-certified technician. They may diagnose the issue precisely and fix it. Do not ignore the problem and continue to use your MacBook with this issue.


1. What happens when a MacBook restarts when closed?

If a MacBook restarts when closed, it means that the system has encountered an error and is unable to go into sleep mode. It’s a sign that there is something wrong that should be investigated promptly.

2. Can a MacBook restart when closed be a sign of malware infection?

Yes. Malware infections can modify system settings, making the MacBook’s lid behavior unexpected. Run an antivirus scan and check the settings from the command line to ensure that the system operates as expected.

3. Can I fix my MacBook when it restarts by replacing the battery?

When the MacBook’s battery is low or faulty, it may cause unexpected shut-down or restarts. However, if the battery is good, replacing it will not fix the software or hardware issues causing the problem.