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installing big sur mac not starting

Downloaded Big Sur for my wife's MacBook Pro when installing machine has stuck with a black screen

Posted on Nov 13, 2020 3:46 AM

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Posted on Nov 14, 2020 5:32 AM

My wife's 13" Retina MacBook Pro (late 2013, Intel Core i7, 2.8 GHz, 16 GB RAM) is also stuck at a black/blank* screen during the upgrade from Catalina to Big Sur. The machine can be turned off by holding down the power-button, which makes the screen turn off (i.e. completely black), but when it's turned on again (i.e. pressing the power-button) the screen goes back to being black/blank.


I have tried resetting the SMC and the NVRAM, but this doesn't change anything.


Any bright suggestions?



* No image is displayed, but you can tell that the panel isn't off, as it is when the machine is powered off.

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installing big sur mac not starting

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