Fixing Boot Loop Issue in macOS Monterey

Guide:

If your macOS Monterey installation is stuck in a boot loop after swapping monitors, follow these steps to potentially resolve the issue:

Note: Before proceeding, ensure you have a backup of your important data.

1. Safe Mode Boot:

   • Try booting your Mac into Safe Mode by following these steps:
     • Turn off your Mac.
     • Turn it on and immediately press and hold the "Shift" key.
     • Release the "Shift" key when the Apple logo appears.
   • Safe Mode may help bypass certain driver or hardware conflicts.

2. Revert Monitor Configuration:

   • If the issue started after swapping monitors, try reverting to the previous monitor configuration. Disconnect the new monitor and reconnect the old one, if possible.

3. Reset NVRAM/PRAM:

   • Resetting the NVRAM (Non-Volatile Random-Access Memory) or PRAM (Parameter RAM) can sometimes resolve boot-related issues. Follow these steps:
     • Shut down your Mac.
     • Turn it on and immediately press and hold the "Option," "Command," "P," and "R" keys simultaneously.
     • Keep holding the keys for about 20 seconds until you hear the startup chime a second time, then release them.
   • Your Mac will restart. Check if the boot loop issue is resolved.

4. Reinstall Legacy Boot Patcher:

   • If you believe that the boot loop issue is related to the Legacy Boot Patcher, you can attempt to reinstall it from macOS Recovery mode. Here's how:
     • Restart your Mac and hold down the "Command" and "R" keys until you see the Apple logo.
     • Select "Reinstall macOS" from the Utilities menu.
     • Follow the on-screen instructions to reinstall macOS Monterey. This process should not affect your data but may repair system files.
     • After the reinstallation is complete, you may need to reapply any patches or configurations specific to your system.

5. Check for Monitor Compatibility:

   • Ensure that the monitors you're using are compatible with macOS Monterey and that you have the appropriate drivers or updates installed, especially if you're using monitors with high resolutions or special features.

6. Hardware Diagnostics:

   • Run Apple Diagnostics or Apple Hardware Test to check for any hardware issues. To do this, restart your Mac and hold down the "D" key until the diagnostic utility starts.

7. Consult Online Communities:

   • If the issue persists, seek assistance from online Mac forums and communities. Others may have experienced similar problems and found solutions specific to your hardware and macOS version.

Remember that resolving boot loop issues can be complex and may require troubleshooting specific to your system configuration. Always back up your data regularly to avoid data loss during troubleshooting.