As of now I can boot up (restart) once or twice for different reasons, but by the thirds time I get the black screen again. So, resetting NVRAM may be helpful for fixing the MacBook Pro's black screen of death. Mac's NVRAM stores in-memory settings including display resolution, startup disk selection, recent kernel panic information, etc. I found that it performs some processing as if it is cleaning something up and then boots up. Then, restart your Mac to see what goes on. BUT you must wait for a half hr or more for it to go to the apple screen and boot up. If I leave my large 22' screen off for a couple of days I can get it to boot up again with the large screen. I have other Masque games that do the same thing but I don't lose the screen. This time it didn't recover but stayed black. At first, I got the black screen after I downloaded a Masque slot game, which when started up, would change the resolution by blackening out and recovering with the new resolution. I would like to see a few more posters switch to a smaller screen and test it. I have a large 22' screen which seems to be the only one that gets a black screen. If the Ati graphics card is bad, logically, it should affect all screens. If you swap your screen for another screen the system boots right up. I am not sure if newer drives are not directly soldered to the circuit board inside the enclosure.I too have experienced the black screen on boot up. Press and release the power button and see if your Mac starts up. If your Mac is turned on, this turns it off. Press and hold the power button on your Mac for about 10 seconds. If your Mac appears to be stuck on a blank screen, follow these steps. I was lucky that in my case the drive had a standard SATA interface so I could connect it outside of the enclosure. A blank screen (black, grey or blue) should appear once or more as your Mac starts up. It could be with the USB interface that the drive is connected through. Start up your damaged Mac while holding down the T key. The same disk in a new enclosure does not unmount at random, MacOS does not want to keep initialising it and I can boot up my Mac with the drive plugged in.Īs I mentioned previously, the problem I had may be different to the issue you are facing but the problem may not be with the actual disk in the enclosure. Plug it in with the appropriate like-to-like cable with the Mac you want to mount it on. Since I put the disk in a new enclosure I have not had any problems (am now touching my wooden desk surface while typing this). The drive is still working today and I use it to move large video projects between work and home. Having pulled the enclosure apart I felt I could not really ask for a replacement, and as the drive seemed OK I ordered a USB disk enclosure. I then put the drive back into the original enclosure and the laptop would not start with it connected, it would unmount at random and OS X would sometimes want to initialise the drive.įrom what I could see the drive was OK but the USB interface in the enclosure had some sort of defect. Having got the data off I formatted and partitioned the drive several times, copied data to and from it, and rebooted the laptop without any issue. I put it in my USB disk dock (similar to this one, ) and the drive mounted and worked without a problem. After getting more frustrated with the drive (and wanting to get some data off it) I eventually pulled the enclosure apart and found the the drive inside was a standard 2.5' SATA drive. The drive was not that old but I just kept having problems with it. The drive in question would randomly unmount, cause OS X to say it needed initialising and would sometimes stop my laptop from booting. I am not sure if my problem was the same as yours, but more detail can be found below. Mac Douglas THE PERFECT COMPLEMENT TO YOUR WRITING STYLE The Ultimate Gift for a Special Person on Mother's Day The subtrolsoCALL US FOR THE LOWEST PRICES IN.

tl dr, the issue was with the USB interface in the enclosure, not the physical drive. Hello posting my initial replies I remembered a problem I had with an external USB hard drive.

Desktop mac boot up black screen