how to turn on macbook when screen is black

Once you hear the boot sound again, release the keys.Power on your Mac and as soon as you hear the boot chime, press and hold the Command-Option-P-R keys.Keep holding the keys for at least 20 seconds.Turn on your Mac and press and hold the Command-Option-P-R keys together as soon as you turn on the Mac.

Hold the power button until the Mac powers off.

Reset NVRAM (Non-Volatile Random-Access Memory), here is how:.

Entering my password is how I fixed this issue.

Even though, your screen is completely black and you can’t see anything, but still enter your password (or try entering your pass) then press enter.

Please try each step until you resolve this issue:įirst thing, you may want to back up your Mac. So it seems that even though my Mac went into a black screen after an upgrade that fails to successfully update however it also looks like the Mac computers may stop working unexpectedly and display only a black screen. Some of our readers stated that they experienced this issue with their Macs unexpectedly. Some users have also stated that they found their Mac like this in the morning after waking the computer from sleep or standby mode. I was investigating this issue and I realized that many users were having this problem.

This article explains how I fixed this problem. The dark screen had an active white cursor. After the update, my Mac restarted, however, the computer booted to a black screen. Yesterday I wanted to upgrade my Mac to the newest macOS, macOS Sierra.

How to turn on macbook when screen is black