If using more than one monitor in a ‘daisy chain’, unplug all monitors and test using just one.

Unplug the video cable (if using a separate monitor) and plug it back in.

Remove all display extenders and switches, and any other devices between the Mac and monitor.

Confirm that all cables are connected securely.

Check the power supply to the Mac (and the power to the display if using a separate unit).

If your display isn’t working the advice is to: If you think it’s a problem with your monitor, then take a look at thisĪpple Support document for advice on troubleshooting a display. It is possible that your Mac does turn on, but doesn’t boot up because it can’t access the display – if that’s the case you are most likely having trouble with the display hardware (rather than a broader startup issue). Have a listen to your Mac to see if it’s making any sounds during boot-up. You could have a problem with the display you have plugged in, rather than the Mac itself.

If you don’t have a separate display plugged in you can skip this step. If you’re using a desktop Mac such as a Mac Pro or Mac mini this could apply to you. If performing a power cycle on your Mac doesn’t help, or if pressing the Power button on the M1 Mac doesn’t open the start up options, there are a few other simple things to try out before moving on to the more complicated steps. We also discuss how to revive your M1 Mac using a second Mac and the Configurator app below. If pressing and holding the power button does allow you to access the startup options then you can run through those options below to get your Mac up and running. For M1 Macs if you press and hold the Power button you would eventually see Loading startup options – assuming the Mac was working properly.

If your Mac is a desktop you will need to unplug it and leave it unplugged for at least ten seconds before plugging it back in and attempting to restart.

Hopefully after waiting ten seconds and restarting, all will be well. You’ll usually hear a squeak as the Mac’s power is forcibly cut.

On a MacBook you need to hold down the power key for ten seconds.

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