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                                            A blank screen (black, blue, or gray) should appear once or more during startup. If you see your MacBook Pro booting black screen something might be a miss.

Why is my MacBook Pro booting black screen?

Nothing can cause panic during system booting of a Mac, like a screen completely going black. Should you encounter a MackBook black screen while rebooting your MacBook Pro, the following could be the causes:

Software or hardware incompatibility: this can occur if you recently upgraded to a new macOS, or updated hardware or firmware. This is because the new updates could come with incompatibility issues, unsolved bugs, or very large disk space consumption.

Power issues: MacBook can boot into a black screen if there is not enough or rated power.

Poor contact between hardware and firmware: the contacts between hardware and firmware are damaged, loose, or dusty, the computer won't start up normally.

Cables not connected 

Third-party apps that expand the screen

But these are not the only reasons. There can be some unknown reasons caused by a motherboard failure. Depending on the age and model of your Mac computer (Be it a Mac mini, iMac, MacBook Air, or a MacBook Pro), except for the black screen of death, you might see a blank, gray, or blue screen.                                    

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