Start up your Mac in safe mode
Starting up your Mac in safe mode can help you determine whether issues you’re experiencing are caused by software that loads as your Mac starts up.
Start up an Intel-based Mac in safe mode
On your Mac, choose Apple menu
After your Mac shuts down, wait 10 seconds.
Restart your Mac, then immediately press and hold the Shift key.
Release the Shift key when you see the login window.
Start up a Mac with Apple silicon in safe mode
On your Mac, choose Apple menu
After your Mac shuts down, wait 10 seconds.
Press and hold the power button on your Mac until the startup options window appears showing available startup disks and Options.
Select a startup disk.
Press and hold the Shift key, click Continue in Safe Mode, then release the Shift key.
To leave safe mode, restart your Mac normally, without pressing and holding any keys during startup.