Fixing MacBook power loss, startup failure

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Ngày cập nhật gần nhất: 15/5/2026

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Fixing a MacBook that has lost power

You are facing a problem with your MacBook losing power, not turning on, and want to try some simple ways to check and fix the problem before taking it to a service center. Refer to the article below from Mytour.

In the following article, Mytour will guide you on How to fix a MacBook that has lost power, not turning on. In addition, readers can also refer to some other articles on Mytour to learn more about How to fix MacBook battery.

MacBook error, not turning on, not turning on

Causes of MacBook power loss

The reasons for MacBook power loss and failure to start may be:

- Hardware-related errors and issues.
- Cache memory is corrupted or damaged: important system files in the boot sector are corrupted.
- Some applications installed on MacBook are incompatible, causing conflicts.

Fixing a MacBook that has lost power

Method 1: Check the power charger

To fix the issue of MacBook losing power, not turning on, not starting, the simplest way is to check the power charger. Try to check if the power source is on, if the charging cable is plugged in correctly, if it is loose or not.

Also, try pressing the Caps Lock key to see if the light is on. If it is, the reason is that the screen is turned off.

Method 2: Boot into Safe Mode

Safe Mode on macOS only runs basic features and allows users to restore Mac. Try booting your MacBook into Safe Mode and check if the device starts.

Step 1: Press and hold Power button + Shift key.
Step 2: After the login dialog box appears on the screen, release the Shift key.

If your MacBook boots into Safe Mode, proceed with the following steps to find the cause of the MacBook error, not turning on, not starting:

Step 1: Download the CleanMyMac app to your computer and install it.

Access here to download the application to your computer.

Step 2: Open the application, then find and click on the Maintenance section.

Step 3: In the Verify startup disk section, you can check for system errors and fix them.

Method 3: Perform a Power Cycle

Another way to fix the issue of MacBook losing power, not displaying is to perform a Power Cycle (completely turn off and restart).

Follow the steps below:

Step 1: First, unplug the MacBook power.

Step 2: Press and hold the Power button for about 10 seconds.

Step 3: Continue to press and hold the Power button while plugging in the charging cable for about 10 seconds.

Step 4: Release the Power button and the MacBook will start up normally.

Method 4: Reset the System Management Controller (SMC)

SMC or System Management Controller performs functions such as managing power, battery charging process, startup process, shutdown process, ... . So, try resetting the SMC and check if the MacBook power loss issue persists.

On MacBook with built-in battery:

Step 1: First, turn off your Mac and unplug the power cord.

Step 2: Next, press and hold Shift + Control + Option + Power button simultaneously for about 10 seconds.

Step 3: Release all the keys.

Step 4: Finally, press the Power button to turn on your Mac normally.

On MacBook with removable battery:

Step 1: First, turn off your Mac and remove the MacBook battery.

Step 2: Next, press and hold the Power button for about 5 seconds.

Step 3: Reinsert the battery and press the Power button again to turn on your MacBook.

On Mac and Mac Pro computers:

Step 1: Unplug the power cord and wait for about 15 seconds.

Step 2: Next, plug the power cord back in.

Step 3: Wait for about 5 seconds and press the Power button again to turn on the machine normally.

Method 5: Boot MacBook into Recovery Mode

If your MacBook still does not power up, try the following methods:

Reinstall macOS:

Step 1: Back up your data on MacBook using Time Machine.

Step 2: Proceed to reinstall the operating system.

Step 3: Use Disk Utility to restore the drives.

Boot Mac into Recovery Mode:

Step 1: Access Menu Apple => Restart.

Step 2: When you hear the startup sound, press and hold Command + R.

Step 3: Continue holding the keys when the Apple logo appears on the screen.

Step 4: Here you can choose from several options to restore your MacBook.

Method 6: Seek professional repair centers

If previous methods have not been effective, consider taking your Macbook to reputable repair centers for assistance.

To avoid overheating, it's best to wait for your machine rather than leaving it overnight. Additionally, choose repair centers that are truly reputable and well-known. Check out Macbook warranty locations here.

This Mytour article has just guided you through some ways to fix a Macbook with power loss. We hope this article has provided you with useful information.

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