Black screen when exiting sleep mode - a fairly common problem among Mac. When you try to "wake up" the computer, the user sees an empty screen, while the computer does not react to anything. Keyboard backlight and beeps indicate that the device is working..
Just say that you should not panic. There are several ways to solve the black screen problem on a Mac.
Check screen brightness and power.
Before taking more serious measures, exclude simple and obvious options:.
Increase the screen brightness to maximum.
Make sure that the computer is turned on and connected to a power source (even if it is a laptop, the battery could be discharged in it).
If you are using an external display, check if it is connected to the device.
Turn the Mac off and on.
The next step is to restart the computer. Typically, this allows you to restore access to your PC and eliminate the black screen problem.
Hold down the power key until the device turns off.
After a while, turn on the computer again.
Often this is enough, especially if the black screen appeared after the system update.
Resetting the System Controller (SMC) and NVRAM.
If the Mac constantly hangs on the black screen on waking up, you may need to reset the System Controller and NVRAM.
On the MacBook Pro, you can do this as follows:.
Turn off the Mac.
Unplug the power cord.
Hold down the Shift + Control + Option keys simultaneously with the power button for 12 seconds.
Release all keys, then plug in the power cord and turn on the computer.
Reboot the device again, but this time, hold down the Command + Option + P + R buttons for 20 seconds to reset the NVRAM.
On older models, this procedure may be slightly different.
Resetting SMC and NVRAM settings is the most common way to troubleshoot power and display problems.
The problem is not solved? Reinstall macOS.
If you have already tried all the previous options, and the black screen remains, you can try reinstalling the operating system. You can reinstall macOS without formatting the disk, but it is recommended that you first create a backup.
Contact technical support.
Nothing helps? In this case, contact the Apple support team or take the device to a service center. Perhaps the problem lies in the "gland" of the computer, although this happens very rarely.