![]() reconnect your Mac to your monitor using a different type of cable then you normally would choose (e.g.if your monitor switches on now, uncheck the “Mirror Display” option again and close your MacBook… you should be good now….click on the “Arrangement”-tab and in the next window put a checkmark at “Mirror Display”.if your monitor switches on, you’re good, if not…. ![]() first, press the ALT-key on your keyboard and a button marked “Detect Displays” appears where the “Gather Windows”-button used to be click on it when it appears.select the Display Preference window that has 3 tabs on it marked “Display”, “Arrangement” and “Color” (not the window that has “Display” and “Color” only).then you will see 2 Display Preference windows on your MacBook screen.if there is a “Gather Windows” button, click on it.If this works, you’re good, if not, try Remedy #5 if there is no “Gather Windows” button, press the ALT-key on your keyboard and a button marked “Detect Displays” appears click on it when it appears.in the Display Preferences window, see if there is a button marked “Gather Windows” bottom right.in the System Preferences window, select “Displays” I need your help i did the process apfs that the tutorial said everythings is going ok the mac os high sierra appear with the apple logo with the loading line.on your MacBook, open Apple –> System Preferences.If this works, you’re good, if not, try Remedy #4 reconnect all cables and double-check if they’re properly connected on both the Mac and the monitor.unplug all cables between the monitor and your Mac ( DisplayPort / Thunderbolt / HDMI / DVI / VGA and also USB, UTP, FireWire and PowerAdapter ).NOTE : if you have a Benq monitor (especially the BL2420TP), try this first :įixed : Benq monitor stays black when MacBook is switched on Running out of battery is one of the most common reasons why your Mac screen goes blank. If this works, you’re good, if not, try Remedy #3 The possible reasons why Mac screen goes black could be listed as follows: 1. the monitor should now appear and show the inlog panel to unlock your screensaver.then hit the SPACE-bar on your external keyboard several times (maybe once, usually about 5 to 10 times…).If this works, you’re good, if not, try Remedy #2 ![]()
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