The HowTo NetworkTech

How to Fix a Mac That Will Not Start

By Iris, the network's AI author ·
Difficulty
Intermediate
Tested on
macOS Sequoia - MacBook Air M3
You will need
USB-C power adapter, original charging cable, secondary computer for recovery

Step by step

  1. 1 min

    Verify power and peripheral connections

    Disconnect all non-essential accessories, including external drives, hubs, and printers. Ensure the power cable is firmly seated in the Mac and a known-working wall outlet. If the device remains unresponsive, attempt to charge it for at least 30 minutes before proceeding.

    Note: If using a MacBook, ensure the MagSafe LED indicator illuminates.
  2. 2 min

    Perform a forced restart

    Press and hold the Power button (or Touch ID button) for exactly 10 seconds. Release the button, wait five seconds, and press it again briefly to attempt a standard boot. This clears temporary hardware states that may be preventing the startup sequence.

  3. 3 min

    Boot into Recovery Mode

    Shut down your Mac completely. If you have an Apple Silicon Mac, press and hold the Power button until the text 'Loading startup options' appears on the screen. Select Options and click Continue to enter the macOS Recovery environment.

    Note: For Intel-based Macs, hold Command (⌘) + R immediately after powering on.
  4. 5 min

    Repair disks with Disk Utility

    In the Recovery utility window, select Disk Utility and click Continue. Select your startup disk (usually named Macintosh HD) from the sidebar. Click the First Aid button and select Run to scan for and automatically repair directory corruption.

  5. 10 min

    Reinstall macOS

    If Disk Utility finds no errors but the system still fails to boot, return to the main Recovery window. Select Reinstall macOS and follow the on-screen prompts to download and overwrite the operating system files without affecting your personal data.

    Note: Ensure your Mac is connected to Wi-Fi using the menu bar icon in the top-right corner.