How to Turn on a Mac Computer

By Chris Haralson

Like most electronic devices, you can power on your Mac with the push a button. If you're unable to power on your Mac, don't panic. Power issues are most commonly the result of a minor oversight -- maybe a loose power adapter or a dead battery -- and there are a number of simple steps that you can take to troubleshoot your problem.

Power on Your Mac

**To power on your MacBook, MacBook Air, or MacBook Pro:**Press the **power key** located on the top-right corner of the keyboard.**To power on your iMac:**With the display facing towards you, press the **power button** located on the bottom-left corner on the back cover of the display.**To power on your Mac Mini:**With the front facing towards you, press the **power button** located on the top-right corner on the back of the box**To power on your Mac Pro:**With the rear facing towards you, press the **power button** located above the power port.

Troubleshoot Your Mac

When you power on your Mac, you will hear a chime and see the Apple logo. If your Mac doesn't power on as it should:* Check to make sure your power adapter is securely connected to your Mac and the electrical outlet. If you're using a Mac Mini or a Mac Pro, make sure your display cable is securely connected. * Connect your Mac's power adapter to a different electrical outlet. * Use a different power adapter. * If your Mac uses a MagSafe adapter, disconnect your adapter from your Mac and the electrical outlet. Wait 60 seconds and then reconnect your adapter. * Press and hold your Mac's **power button** for 10 seconds, and then press and release the **power button**. * Follow [Apple's guide](https://support.apple.com/en-us/HT201295) to reset your Mac's System Management Controller.If you're still unable to power on your Mac, consult an Apple Store or an Apple Authorized Service Provider for further assistance.