Get a thunderbolt cable and another Mac.So, to be safe, follow the steps below to carry out an emergency backup. However, most fixes here are pretty technical and involve you initiating critical commands. If your MacBook Pro will not turn on, this section has you covered. So, if you notice your MacBook Pro won’t turn on but is charging, know your SMC hasn’t received power, a function somewhere has failed, or it wasn’t able to create the needed “Mini power supplies.”Īlso learn: Ways to Fix Macbook not charging error MacBook Pro Won’t Turn On | Top Fixes They then created “mini power supplies” power on your CPU, hard drive, Mac’s memory, keyboard, trackpad, and screen. When the SMC detects the power on command, it reaches out to the chipset, which creates a “ mini power supply” of different voltages (5V, 3.3V, 1.2V, 1.8V, etc.) following a specific sequence. When you initiate the power-on command by pressing your Power button or Touch ID, a series of complicated actions occur. The SMC is in charge of the MacBook power-on process. These components are pretty integral and have a connection of some sort with the part of the system responsible for power, so a fault could result in the MacBook Pro not turning on. Your MacBook is made up of these components, battery, logic board, keyboard, screen, SSD Drive. If your MacBook Pro won’t turn on but is charging, then this is what may be happening.
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