Macbook not switching on
My Macbook just showing the apple logo and the progess bar, on switching on. Once the progess bar completes, it again shows blank screen switched off
MacBook
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Please refer to If your Mac doesn't start up all the way - Apple Support; specifically, "Learn what to do if your Mac starts up to an Apple logo or progress bar." Exhaust every one of those steps, all the way through and including the end.