Desktops :: Mac Pro Goes To A Black Screen When Idle And Won't Restart?
Jun 20, 2009
Recently my Mac Pro has been going to a black screen when idle for a while and I need to power off using the power button and restart. It's not set to ever go to sleep but if I use the sleep function under the Apple, it functions as it should, waking when I touch a key (although I don't let it sit for a while before I wake it). When it is in the black screen mode, it still is performing Time Machine backups.
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Jun 12, 2010
I'm having a bit of a problem with my Macbook. Once the display goes to sleep, I can't seem to get the screen to come back. The computer doesn't actually turn off, but when I try to get it back with my mouse it goes black. I can usually still slightly see my applications and stuff, and the fan still runs. I end up having to shut it down and then restart it every time. Just wondering if anybody knows how to fix this.
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Jun 30, 2009
My Mac Pro has started to go to a black screen when idle for a period of time. When it does this, I need to use the power button to power off and restart. It does not appear to be asleep (I have it set to never sleep) since Time Machine is still backing up and Mobile Me is still syncing. Oddly, if I manually put the computer to sleep (under the apple), it will come back to the normal screen by using a key on the keyboard (moving the mouse does not work) no matter how long I am away.
I have tried resetting, disconnecting and reconnecting all cables but the problem still exists.
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Jan 2, 2011
I recently purchased a refurbished 24 inch imac from the noticed when the computer is idle (black screen), my wired mouse does not work. When I pull the cable out of the usb port on the imac, the computer screen comes on and then I reinsert the cable back into the usb port in the computer to use the wired mouse (wired mouse works fine after I reinsert the cable back into the usb port).Could this problem be associated with the wired mouse or with the usb ports on the imac?
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Feb 3, 2012
Desktop restart shows flickering black/white screen, then black. Could not restart.
Info:
iPad 2, Mac OS X (10.6.6)
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Aug 10, 2009
When i turn on my mac pro the screen will not turn on but my mac pro is booting up. How do I trouble shoot?
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Aug 14, 2010
Recently, a vertical black line (maybe slightly dotted) appeared running down the screen of my iMac G5 (Power PC processor). On the left of the line the screen appears fuzzy while on the right it's OK.
Has anyone experienced this before? Hope to hear from someone who has.
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Aug 11, 2009
The screen/crt of the imac that I have been using since about '98 went black - this actually happened a couple times previously but I was able to get back in (no idea - one of those things where out of frustration you just start pushing everything at once and it suddenly pops back on). I have tried everything - the internal battery, that little button on the motherboard (not sure if that is what it is called) that resets everything, the connection of the main power button on the front, etc. I am fairly sure it is stuck in sleep-mode or something (no beeps, hard drive doesn't make the usual booting-up sounds but you can tell that it is receiving power) but after months of wasted effort I finally gave up. I bought another slot-loading G3 and would like to swap hard-drives between the two - I have taken my old G3 completely apart so many times that I am totally comfortable with that aspect but have hesitated because if I somehow blow this one I will be left with nothing.
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Apr 21, 2012
screen goes black after screensaver and when switching desktops? [URL]
Info:
iMac, Mac OS X (10.7.3)
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Sep 11, 2010
I have a MacBook C2D 2GHz, 4gigs of ram from mid 2007. It has snow leo v. 10.6.4.
I cant remember when the problem appeared but maybe 6 months ago.
Every time the mac is rebootet or shutdown the screen goes black the sleep light stays on but I can hear the chime and cd drive make shot start up sound.
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Sep 6, 2014
My mac wont on (goes to black screen) after a gray bar that usually shows after restart has been loaded. What should I do?I already tried the safe mode and it's not working ...
Info:
MacBook Pro, iOS 7.1.1
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Feb 8, 2009
Everytime I turn it on I get a black box asking to shut down or restart the mac. I have managed to get it to turn on to powersave and managed to update the software. Thought it might help but just made it worse - it won't boot up at all now past an apple symbol with a little swirly thingy underneath (I apologise now for my lack of intelligence when it comes to computers/knowledge/names of things!) The first time I managed to boot the computer up it came up with the grey screen and a little folder flashing between a face and a question mark which I assume meant it couldn't find anything but that appears to have gone away now. I bought this computer new from Apple about 2 - 3 years ago and no disks were provided with it.
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Mar 30, 2012
My 2009 MBP would have problems shutting down or restarting. On a shutdown, it would appear to off, black screen and no lights, but if you tried pressing the power button nothing happened. I had to hold the power button to turn it completely, then press it again to startup.Restarts had the same behaviour, it would get to a black screen and I would have to hold the power button and then press it again to startup.I ended up taking this MBP back for another problem, and they replaced it with a 2011 MBP (since I had recurring logic board that failed a few times).Anyway, I swapped the SSD from my old mac into the new one, and I have the exact same behaviour!!Seems to be some corrupt settings or something. So I booted from a Mac installation disc, wiped my hard drive and reinstalled the OS, then I restored from Time Machine, and unticked the option to restore settings.I want to also add, that my backlit keyboard isn't working either.I tried resetting the SMC, but the power light on my charger didn't cycle orange/green, so I'm not sure if it worked. I tried multiple time, following Apple instructions.I also reset the PRAM, which did work.
Info:
MacBook Pro (17-inch, Late 2011), Mac OS X (10.7.3), 16GB RAM, OCZ Vertex 3 Max IOPS 240
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Dec 3, 2014
I just having problem with starting my Macboook. First, at start screen (gray background with the apple logo) appears pink/red horizontal lines over all the screen. Then, when i'm using my computer, screen goes black for no reason and i need to force restart to turn on the Mac.I can't believe this is happening to a "HIGH QUALITY" expensive computer. This seems happening to 2011 Macbook Pros...
Info:
MacBook Pro, OS X Mavericks (10.9.4)
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Dec 2, 2014
I accidentally connected my wife's MacBook Air to my docking station at work today. Nothing seemed to happen so I undocked it and the computer displayed a black screen and I could see and move the cursor using the trackpad. I then tried shutting down by holding the power button for 5 seconds, 10 seconds, 1 min, etc. Nothing worked and it's stuck on the black screen so I can't use Yosemite's menu to shut down or restart. When I leave the computer idle for around a minute, the cursor disappears but it will reappear after pressing keys on the keyboard.
Info:
MacBook Air, OS X Yosemite (10.10.1)
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Apr 8, 2008
Does anyone else consistently experience a black screen and 'nothing' when they request a restart from XP side of a boocamped machine, but not the OSX side?
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Apr 26, 2012
Whenever I turn my computer on, it makes the start up sound and acts like the screen will turn on, then it goes black. I can't get it to come out of sleep unless it goes idle. It's like the roles have reversed. The screen turns on when idle, but as soon as I move the mouse or touch a button, it goes black again. It's plugged in, and even if the battery is dead, it always runs when it's plugged in. Also, on the battery bar, it's stuck at 00:26.
Info:
MacBook Air
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May 10, 2010
After moving I setup the Mini, but got nothing from the monitor. Reset PRAM & PMU, nothing. CPU chimes, etc.work, but the only thing I get from the monitor is a yellow square with a brief message indicating there's no signal.
It's a Mini, 2 MB RAM, Core 2, OSX10.5.x, it's less than a year old. The CPU appears to be OK. Monitor is getting power.
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Mar 14, 2009
i Have a 2.0Ghz Unibody macbook and lately ive been getting the rainbow pinwheel more often especially when using the new beta safari browser could that be the cause? and also when i try to restart my computer to boot into Vista through bootcamp it acts like its going to shutdown and restart but then it just freezes and i get a black spiral like the gray one that shows when you first start up osx, but then nothing happens and i have to force shutdown by holding down the power button.
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Sep 11, 2014
I have a mid-2010 MacBook Pro, which has been upgraded recently to Mavericks. My problem is that randomly (usually due to pressing a button or using the mouse) my computer will black out and restart. I was having these intermittent kernel panics earlier this year and took it to a repair shop that said it was not a hardware issue and clean-installed the OSX, but the problem has persisted. The only difference is that before it would just restart while now I get the gray "Your computer was restarted because of a problem" error screen.
Below is the log from the latest report:
Anonymous UUID: 7E9ECFC6-2275-1966-C858-56615F0EFD1F
Thu Sep 11 08:33:35 2014
panic(cpu 1 caller 0xffffff7f839fef7c): "GPU Panic: [<None>] 3 3 7f 0 0 0 0 3 : NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xd2000000 0xffffff80e4392000 0x0a5480a2, D0, P3/4
"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.6.22/src/Apple MuxControl/kext/GPUPanic.cpp:127
[code]...
Info:
MacBook Pro (15-inch Mid 2010), OS X Mavericks (10.9.4)
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May 24, 2012
I came back from work to wake up my iMac. It made the noise but the screen stayed black. I tried restarting by holding the power button- I can hear it start and the chime but still have a black screen. I tried resetting the pram, and unplugging the cord but I still get a black screen. I can hear the chime though; I'm not sure if that means anything. I just had the hard drive replaced in February so I hope it's not that. just wanted to clarify that when I restart, I get the chime but the screen stays black- I don't get to the grey screen. So I'm assuming right now that my display may be shot?
Info:
iMac (20-inch Mid 2007), Mac OS X (10.5.8)
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Aug 25, 2009
I was software updating my brothers computer and I shut it down because he was going to bed and I turned it back on. It asked me to restart the computer and I did and a black shade saying to restart it came up again... What should I do? I have shut it off and on a zillion times and still the black shade with weird text in the background is still happening.
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Sep 16, 2009
I've heard about computer monitor kits where you can transform the monitor into a touchscreen for PCs. Does such a kit exist for Macs ?
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Jun 14, 2007
I got a cheap 1.42ghz 512mb RAM, 14" screen G4 ibook because it had a broken hinge. I tore apart the laptop and replaced the hinge (screen frame) and put it back together. The screen wouldn't work. I opened it back up and found that the video connector was lose, so I connected it and put it back together. BAM!! Everything worked... everything except the sleep feature when the lid is closed. So I opened it back up, took the magnet from the old frame and put it on the new frame (which was missing its magnet).
When I turned it back on the screen was blank/dark. It showed all the signs of classic inverter board burnout (dark screen, can be seen with flashlight from behind, can be seen on external monitor), so I ordered an inverter board and when it arrived, I swapped it out. Still nothing. The next idea would be the backlight, but that doesn't make sense... I'm trying to figure out what might have happened to make the inverter/backlight go from working fine to not working when all I did was removed the screen back case, screw on the magnet and close it up. I have done a bunch of digging around under the hood and am wondering if anyone knows of a possible ground wire, other connection, easily broken wire, or other issue that might have happened. I'm thinking that it might be one of the power wires that goes into the inverter. It might have broken inside the shield, or maybe I was sold another bad inverter board.
So:
Assumption 1: one or both inverter boards are good.
Are there any connections other than the inverter data/power cable from the mobo and the cable from the inverter to the backlight?
Does anything else (backlight, etc) have to be grounded? Where are these groundings?
Would anything else give the same symptoms except the inverter?
How can I test the backlight? I heard that there are two lights in these machines, so if it was one of the florescent lights, only 1/2 the screen would be dark.
Assumption 2: Neither board is good and that is the problem.
How can I test the inverter board (short of an osilascope) to see if it's working?
Is this a good assumption?
I'm about stumped right now and haven't found any direct help on forums. I'm hoping someone in the Mac community has run into this or has an idea about what could be going on. I'm really hoping that I missed something like replacing a screw that is also a ground or something along those lines.
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Sep 4, 2009
I teach in a computer lab with 30 Duo Core iMacs running 10.5.4. Occasionally I will have a screen that begins flashing off and on. The computer should have gone to the screen saver.
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Nov 27, 2009
I have a Powerbook G4, and noticed a line (a thickness of a hairline) on my monitor displayed horizontally, about a length of 1/16 of an inch.
I know it's very tiny but I wanted to know what's causing this and if there's any way to fix it..
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Jul 6, 2012
We have 3 users set up on the computer (iMac, Snow Leopard). This just started recently. I can't think of any changes I made to make this happen.
Info:
IMAC, Mac OS X (10.5.1)
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Jun 10, 2012
How do I change the iTunes screen display from 'white on black' to 'black on white'
Info:
24" iMac
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Feb 4, 2008
I am looking at purchasing an Ibook G4 but the description of the item includes this:"When you switch it on it begins to load up i.e. the blue screen with the Apple logo, but then the screen goes black or flickers. Said friend has kindly wiped the hard drive for me so now when you switch it on it makes the �opening� noise then you get a blue screen with alternating �?� and the Finder logo."
I have a feeling this may have been a temporary fault with the screen connector being loose and possibly damaged.But i assume the alternating "?" and the "finder logo" is simply a lack of OS?
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Mar 17, 2009
I was trying to install Windows XP Pro, but for some reason the it wasn't showing another HDD to install Windows on. So I quit the install, and restarted my computer. Now all that happens is the normal grey screen appears (with no Apple logo), then it goes to a black screen and has the blinking cursor (Kinda like DOS).
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