You should also check your battery cycles to see if it needs to be replaced.
From the power panel, look down until you find the cycle count and condition for your battery. Also Read: You can do this in a couple different ways:.
Ensure It Has Power
Move onto the next step listed here for a special key pattern that might do the trick. This is what you have to do:. Or… not. Like I said, one of the causes for black screen is due to broken disk permissions.
All you need is run CleanMyMac on your Mac. Again, the best way to identify those suspicious apps is run CleanMyMac. If you find some apps that launch automatically often without your consent , feel free to disable or remove them.
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Another way to do this is by searching the Apple Community for a post that most matches yours to see if any bugs and ways to squash them have been identified, although you can also make your own post. Other forums such as MacRumors and iFixit are also great places to start, as well as searching for general articles.
If your Mac doesn't turn on or start up
For example, Mark Gibbs from NetworkWorld discovered that on macOS el Capitan, using his iCloud password caused the computer to experience an error where it booted to a black screen with just his mouse and no login options. If you're not sure about the outlet, test it with a lamp or other device. Then try these solutions, whether or not your Mac has signs of power: If that doesn't help, repeat after unplugging accessories from your Mac, including printers, drives, USB hubs, and mobile devices.
You could have an issue with one or more of those devices or their cables. If nothing appears on your display, make sure that its brightness is turned up. Start up in safe mode.
A Solution for MacBook Pro Booting to a Black Screen
Start up from macOS Recovery. If the only way that you can start up is from macOS Recovery, the operating system on your startup disk might no longer be usable. If you recently installed memory or a hard disk or SSD , make sure that it's compatible and installed correctly. If possible, remove it and test with the original memory or disk.