If your Mac doesn't turn on

Make sure that your power cable is undamaged and plugged securely into your Mac and a working electrical outlet.

If your Mac has no built-in display, make sure that your external display is connected to power, connected to your Mac, and turned on.

Press and hold the power button on your Mac for about 10 seconds. (Every Mac has a power button. On laptop computers that have Touch ID, press and hold Touch ID.)

Then press and release the power button normally.

You could have an issue with one or more accessories or their cables. Unplug all accessories from your Mac, including printers, drives, USB hubs, and mobile devices. Then repeat step 2, above.

If your screen shows a flashing question mark, circle with a line through it, or anything else, your Mac is turned on but isn't starting up:

If your Mac turns on but doesn't start up all the way

If your Mac seems to be turned on but the screen remains blank, the issue could be software related:

If your Mac starts up to a blank screen

If you're using an older, Intel-based Mac, resetting the SMC might help:

Reset the SMC

If your Mac still doesn't turn on, contact Apple Support.