Turn on (start up) your Mac
To turn on your Mac, press its power button, which is usually marked . Some Mac notebooks also turn on when you open them or connect them to power. Learn more about turning on different Mac models below.
The power button is a circular button on the back of the computer. With the back of the Mac mini facing you, the power button is on the far-left side.
iMac and iMac Pro
The power button is a circular button on the back of the computer. With the back of the computer facing you, the power button is in the bottom-right corner.
On Mac Pro (2013), the power button is a circular button on the back of the computer, just above the port where you plug in the Mac Pro power cord1.
On Mac notebooks with physical function (F1–F12) keys, the power button is a key in the top-right corner of the keyboard2.
On MacBook Pro models from 2016 and newer, Touch ID (power button) is on the right side of the Touch Bar at the top of the keyboard.
MacBook Pro (2016 and later) and MacBook (Retina, 12-inch, 2017) also turn on when you open their lid or connect them to power, as long as your battery has some charge.
1. On earlier Mac Pro models, the power button is a circular button on the front of the computer, above the headphone jack.
2. On earlier Mac notebook models, the power button is a circular button next to the keyboard.
Turn off (shut down) your Mac
The best way to shut down your Mac is to choose Shut Down from the Apple () menu.
Just as your Mac follows a startup process after it turns on, it follows a shutdown process before it turns off. That process includes automatically quitting all open apps and logging out of your macOS user account.
If your Mac doesn't shut down, try Force Quit to close any apps that aren't responding. If that doesn't work, press and hold the power button until the Mac turns off.
Press and hold the power button to turn off your Mac only if it isn't responding. You'll lose unsaved changes to any documents that you have open.
If your Mac won't turn on
If your Mac doesn't turn on, check your power connection, and if you're using a Mac notebook, make sure that its battery has some charge. You can also try holding down the power button for ten seconds, then pressing the power button again to see if the Mac turns on. Learn more about what to do if your Mac won't turn on.
If your Mac turns on but doesn't start up completely, you can use safe mode to isolate issues with your Mac.