2015 Macbook Pro Randomly Turns Off Screen and Wont Start Again Until I Hold Power Button

Rarely, a Mac may see some peculiar upshot during system boot that can cause quite a bit of panic, similar booting to a completely black screen. Information technology would exist like shooting fish in a barrel to interpret that as a potential hardware trouble, and in some particularly rare situations that may be the case, but it's more often a software issue that can exist resolved with some uncomplicated troubleshooting steps.

Case in indicate; one of our readers feel with his MacBook Pro, which out of the bluish rebooted to a completely dark screen. Though information technology'southward rare, nosotros figured this would be a skillful opportunity to share three potential solutions to this problem, and like problems, should you come across a nighttime screen on system beginning.

Start, Reset the Organisation Management Controller to Fix the Black Display on Kick

The first thing you'll desire to exercise resolve nearly every power related upshot on a Mac is to reset the SMC, or System Management Controller. This will dump and reset settings for annihilation power direction related, and is long known to resolve problems with things like fans, heat, sleeping issues, and of course, brandish bug.

On whatsoever mod MacBook Pro or MacBook Air with a built-in battery, which is just a bout all of them nowadays, this is how you lot practice that:

1. Shut down the Mac and connect it to your MagSafe adapter and a wall outlet equally usual
2. Concord down the Shift+Control+Option+Power push button at the same time for a few seconds
3. Release all keys at the same fourth dimension, then kicking the Mac as usual

Older Macs tin find directions hither for the same process on their machines, it'due south slightly different if you can take out the battery.

When the Mac boots, hopefully the black screen has gone away and y'all're back to normal, simply if it doesn't… reader Nathan D. wrote in with the next tip.

Second, Try a Keypress Sequence to Ditch the Black Screen

Regular readers may call back that nosotros covered some Os Ten keyboard shortcuts for the Shutdown, Sleep, and Restart controls of only about every Mac, and this piddling fundamental printing sequence takes advantage of those. Oddly enough, it seems to work to resolve some of the mystery Mac booting into blackness screen issues. Here's the precise sequence to follow:

1. Printing the Power / OFF button one time – this will bring upwardly the dialog box which y'all can't see
2. Press the "S" button – this is the shortcut to sleep the Mac
3. Hold down the Power push button until a hard shut down is forced
4. Wait nearly xv seconds, then hitting the Ability button again to turn it back on

This key press solution was discovered by reader Nathan D., who institute it tucked away on MacRumors Forums, and it has worked for several other commenters there as well. Another users on the MR forums suggest that resetting PRAM helped them besides, but about power issues are resolved past the SMC reset.

Try a PRAM Reset to Resolve the Black Boot Display

If the higher up ii tricks failed, a PRAM reset tin often exercise the trick, equally many of the commenters on this article can attest to. As a potential solution to the black screen on boot, this is washed upon restarting the Mac like to an SMC reset:

1. Reboot the Mac and every bit presently as you hear the kicking chime, concord down the Command+Selection+P+R keys together
2. When you hear the boot sound again, the PRAM has been reset then allow the Mac boot over again as usual

At this point your Mac should kick once again as usual and no longer accept the black display, loading Mac Os or Mac Os 10 as usual.

Finally; Enter Password, Hit Render

Some users in our comments written report an interesting alternative finding if they hitting the blackness screen on boot; if they enter their regular login countersign and hit the Enter/Return key, the Mac boots upward as usual and they're good to go. Try this out, information technology might piece of work for you:

1. When the Mac boots into the black screen, enter the password y'all'd utilise to login to the Mac as usual
2. Hit the Return key

If this works, you'll know rather quickly because the black screen will requite way to the regular Mac Os desktop.

Plough Off Automatic Graphics Switching (for blackness screens on dual-GPU MacBook Pro only)

Some MacBook Pro models have dual graphics cards that switch automatically. For any reason those models can sometimes kick directly to a black screen. Oft this can be remedied by simply disabling automatic graphics card (GPU) switching on MacBook Pro as instructed here:

1. From the  Apple carte choose "System Preferences" then go to "Free energy Saver"
2. Toggle the switch side by side to 'Automatic Graphics Switching' to turn that off



3. Restart the Mac as usual

Did i of these solutions work to go past the black screen on Mac boot for y'all? If you happen to run across this unusual issue with your Mac, let us know how you resolved it past leaving a comment below, and if the above tips worked for resolving the boot to black screen problem on your MacBook, MacBook Pro, MacBook Air, and whichever Pro or Air model it may exist. And of course if you accept your own solution to the booting to a black screen result, share that below in the comments as well!

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Source: https://osxdaily.com/2014/11/22/fix-macbook-pro-booting-black-screen/

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