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iMac 5K 2019 startup and then black screen

My iMac 5K 2019 (I believe) just randomly began to give me a problem. I used it two days ago, and shut it down, and then I tried turning it on today, but after the apple logo showed up and the progress bar began moving further to the right, the brightness of the black screen goes up a tad bit and then it stopped moving around the halfway point and then after a few seconds, a flicker happens where I can see the mouse cursor up in the top left corner of the screen while having a black screen, and then it goes away and I'm left with a black screen.


I hear that the fan is running, and sadly I had my mute button on before, so I can't tell if the startup sound plays or not, but I imagine that it does.


What the heck is going on? Anyone know of a fix?


I also let it run, and it eventually got darker, as if it was beginning to enter display sleep mode, and when I pressed a key on my keyboard, it lit up again, but still a black screen.

iMac 27" 5K, macOS 10.13

Posted on Jun 5, 2019 4:56 PM

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Question marked as Top-ranking reply

Posted on Jun 6, 2019 2:48 AM

First try resetting the SMC How to reset the System Management Controller (SMC) on your Mac - Apple Support

If that doesn't help try booting into safe mode Use safe mode to isolate issues with your Mac - Apple Support

Finally of you’re still having problems make an appointment and take your iMac in for service, if it's a 2019 model as you state it's still under warranty.

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Question marked as Top-ranking reply

Jun 6, 2019 2:48 AM in response to SBBBear

First try resetting the SMC How to reset the System Management Controller (SMC) on your Mac - Apple Support

If that doesn't help try booting into safe mode Use safe mode to isolate issues with your Mac - Apple Support

Finally of you’re still having problems make an appointment and take your iMac in for service, if it's a 2019 model as you state it's still under warranty.

iMac 5K 2019 startup and then black screen

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