![]() ![]() If all essential input and output hardware are functioning well, your MacBook will chime and the screen back-light will be activated. Adjust display brightness or use an external monitorĪfter you power on your MacBook, your MacBook will go through a series of complicated events. Just follow the checks and techniques below, you have a great chance to make your Mac usable especially when your MacBook Pro won't turn on but is charging. ![]() The reasons why your MacBook is not turning on vary a lot. Or macOS fails to start all the way up, like iMac won't boot past Apple logo or loading process is unbrearably slow. Unexpectedly, your MacBook Pro won't turn on or iMac won't turn on and shows a black screen after you press the power button. In general, Macs are reliable computers but not immune to problems. By Jessica | Posted to Home > Mac Data Recovery Tips, Updated on September 17th, 2021
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