I then removed the glass front and LED screed and again cleaned it with a compressor air gun. This was all driving me mad so I decided to take out the Ram and give it a compressor blow out to get rid of dust that seemed to work for a few days but got worse again. On further investigation I found that by holding down the Alt/Option + CMD AND Eject keys together it would replicate th flicking on/off button and would resume for a while. I found that by reducing the brightness to minimum it would not go black screen but I could not really use it like that. I tried the reset PRAM & SMC with some results but again got gradually worse until it would not work so tried flicking the switch again which worked for a minute or so each time. Its been getting worse over time, my usual response at first was to flick the on/off button and it would suddenly re-appear again, After this happening for some time it got worse so I started investigating what options were available. I have been running into Black screens for some time now, Hi I have a mid 2010 27″iMac running High Sierra. Remember to always contact an official Apple Support channel via, or authorized support or repair center for best results.ĭid this resolve your black screen on wake issues for your Mac? Let us know what helped or what didn’t in the comments below, and if you have another solution then share that too! Although rare, it’s possible that a hardware issue is the cause of the problem, or perhaps some other issue that has been overlooked is causing the problem. If you have done all of the above and the Mac is still getting stuck on a black screen when waking from sleep, it’s time to call the official Apple Support line or bring your Mac to an Apple Store for service. 5: Black Screen on Wake Still Appearing? Contact Support You can reinstall Mac OS without formatting the computer though it’s always a good idea to backup first. If you reset SMC, NVRAM, turned up the brightness, and insured the computer is connected and powered on, yet the Mac still wakes to a black screen continuously, you may need to reinstall MacOS Sierra (or whatever version is on the Mac). Resetting SMC and NVRAM is a common troubleshooting trick for many odd power and display issues, and similar to the black screen on wake it will also fix most occurrences when a Mac boots to a black screen and is unresponsive on system start too. Next, reboot the Mac again and this time hold down Command+Option+P+R keys concurrently for about 20 seconds, this resets the NVRAMįor other Macs you can read how to reset SMC on Macs here, and how to reset NVRAM / PRAM on Macs here.Release all keys at the same time, then reconnect the Power cable and turn the Mac back on again.Hold down Shift + Control + Option and Power button at the same time for 12 seconds.If the Mac repeatedly gets stuck on a black screen when waking from sleep, you should reset the onboard power management and NVRAM.įor modern MacBook Pro machines, the steps to perform both SMC and NVRAM reset are as follows: Sometimes just rebooting the Mac will be sufficient to remedy the issue completely, this is often the case if you encounter the black screen on wake after updating Mac system software. Wait a few moments and then hold down the Power button on the Mac again until it boots back up again.Hold down the Power button on the Mac until the computer shuts down.You can force reboot with the following simple instructions: This will typically allow you to regain access to the computer, and it is usually sufficient to resolve the black screen on wake problem completely. ![]() The next step is to turn the Mac off, then turn it back on again. Simply turning the brightness up or turning the Mac on will resolve those type of issues quickly. Often the brightness is just turned down low or the computer is actually off and not in sleep mode. Check to make sure the Mac is plugged in to a power source (even a laptop, the battery could be drained).If the Mac is using an external display, make sure that display is powered on.Make sure the Mac is actually powered on.Turn the screen brightness all the way up.1: Check the Obvious: Screen Brightness & Powerīefore anything else, check the obvious possibilities: We’ve broken down this troubleshooting guide into sections from the easiest and most obvious solutions to the more complicated, follow along as needed. Resolving a Black Screen on Mac When Waking from Sleep Don’t panic! If you experience an unresponsive black screen when waking your Mac from sleep, you’ll likely be able to resolve the problem with the following troubleshooting steps.
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