OS X V10.7 Lion :: IMac Constantly Restarting - Screen Just Stays Black
Feb 18, 2012
I have a 24inch iMac 3.06ghz and seems to be stuck restarting. It will not get to the any screen (just stays black) and constantly restarts, the chime seems to get quieter each time, after about 6 times it comes back to full volume but will not get any further in the start up process.
I restarted it myself because the screen was flickering very quickly and seemed to freeze (this is the first time I have encountered that). I had to power down by the button at the back, then restart using the power button and now won't start up. All software fully up to date. Running Lion.
Info:
iMac, Mac OS X (10.7)
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Sep 5, 2014
I have an early 2008, 24-inch iMac. This problem started after I installed an OS X Mavericks update (and has continued). Basically, after the screen is asleep for a while, if you come back and move the mouse / tap the keyboard, the desktop never reappears. The screen stays black but the mouse cursor shows up and you can drag it around. I've seen some similar issues that said they could get the app switcher, but that never happens for me. Just mouse cursor and black screen, no matter how long you try to wait it out or tap buttons. The only solution is a cold restart, although I think in the past I was able to fix by turning off energy saver settings for putting the display to sleep. It doesn't happen every time, I'd say it happens over 50% of the time. The problem actually kicked in with one particular App Store update of Mavericks. I believe it was 10.9.3 if I recall correctly.
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May 31, 2010
Loaded pics up for the 1st time from my 7d into Aperture 1.5 and left my computer on, woke up and it wouldn't come out of sleep. I did a hard shutdown holding down the power button and the screen just stays black and I never hear the chime, light on power button is solid white. Since I'm on vacation with my wife and infant daughter I don't have time to mess around troubleshooting but see it may be a failed logic board? Do they just fail randomly or what? My aunt that I'm staying with turned off a surge protector a light was plugged into, I was using her power charger for her MacBook Pro and only this morning found out it was plugged directly into the outlet below the surge protector was on that she flipped off.
Could that have created a surge on the other plug or something? She does this all the time with her MacBook Pro plugged in and its never created a problem, I'm writing this post from her computer right now! (Only brought the Mac out because my iPad wouldn't load the photos for some reason, don't know if it has something to do with the HD video or because I also had photos from my Canon 50d on there or if that has something to do with my Mac's problem?) I've attempted an SMC restart and it does the same thing? I'm now extremely stressed thinking I may have lost all my pics that I haven't backed up in months of my infant daughter. When I start it up I hear an initial sound of a hardrive spin or fan but then its basically silent.
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Feb 17, 2012
Mac book pro starts up but screen stays black. I have tried taking the battery out, waiting over night it still is black
Info:
MacBook Pro, iOS 5.0.1
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Apr 1, 2012
This 5 year old iMac makes the seek optical drive sound when switched on, but does not chime, but I can hear the hard drive going afterwards.
The screen just stays black, not a flicker.
The problem is that it is located in a small pretty isolated town in NE Brazil, I will be going back out there later in the summer so if anyone has any helpful ideas it would be most welcome. Fortunately we have a full CCC clone of the hard drive and a working MBP so we haven't lost anything, but it would be very good to have it working again.
Does it have a socket for an external monitor, I really cannot remember, as I have not seen it since November, I know the old round iMacs had one.
The nearest Mac store is probably in Rio or Sao Paulo which are a good day travelling by car and plane so there is no chance of getting it there.
Info:
iMac, Mac OS X (10.4.11)
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Jun 19, 2012
imac turns on but screen stays black ? i can hear it operating ...
Info:
imac 20" and macbook 13", Mac OS X (10.5.1)
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Aug 31, 2014
I can hear the chime going off, but the display turns on you cannot see through naked eye, you have flash light onto to the screen to see very little, can you tell me why this is happening and how to fix this issue. Secondly, can you tell me how to fix this issue, my keyboard and trackpad doesn't work. Is it the problem of flex cable of both the keyboard and trackpad or is the related to software
Info:
MacBook Pro, OS X Mavericks (10.9.4)
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May 10, 2012
My 2007 MacBook is starting up and making all the right noises but the screen stays black - looking on different forums it seems likely it is either the back light or the inverter that need fixing but in the meantime there is some things on there I need - I have an IMac as well and I have tried to connect the too so that I can view the macbook on the imac - I used a firewire cable and held down the t key on the macbook (but obviously couldn't see if it had worked) I then turned on the Imac and held the option key down but it only give me the IMac HD to start from and not the Macbook
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May 5, 2012
The latest iMac model. When I click on the power button: I can hear the Hard disk and the DVD drive spin up. The screen stays black. The startup sounds plays half way through the first time, like its being cut off. After the first startup chime has been cut, the chime keeps playing in a loop. The computer doesn't come any further than that.
I have tried: Unplugging all peripherals, with the same result.
SMC reset: Unplug power cord and hold power button for 5 sec. PRAM reset...
It seems like the computer does not even get to boot and ignores all keyboard input. I also tried booting from the DVD drive with the installation disk. But I can't get any further than the repeating startup chimes.
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Jun 7, 2012
I have a 2006 Macbook that when powered up, the screen stays black, the machine beeps 3 times, and sleep light blinks 3 times before the process repeats over and over. When doing a search, I saw something about the RAM but
Info:
MacBook
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Jun 15, 2012
additional information: 27" Intel based 64 bit 8GB ram dual boot with windows 7 I tried resetting my pram
Info:
iMac (27-inch Mid 2011), iOS 4.3.1
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Apr 5, 2007
My brother's iBook G4 (I think it's a 2003 model) has a problem with the screen. When the computer is turned on, the screen stays black, although the backlight is on (the apple glows). Sometimes, on start up, the screen works normally for a random amount of time before going fuzzy and then black again.
Any ideas on how to fix this? Is it likely to be a problem with the hardware in the actual computer, or just the screen? Or is it a software thing?
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Jun 15, 2010
recently i've been having problems on my mac as its begun to slow down drastically over the last few days and i've been seeing these strange outlines around some of my programs (see image).
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Jun 21, 2012
Everything worked fine until I started to notice a completely black screen on startups. It only happened twice since I bought it, and I ignored it for a while. Now, it has become worst; however, sometimes it starts up normally. Moreover, the "experts" from Apple checked my MBP and as they were doing some test, the display went black right in that moment. He said to me that the problem could be something wrong with the cable or display. According to research, Apple announced that a few MBPs had this symptom; however, this was only presented in MBPs with Nvidia video cards and only on mid-2010 logic boards. In my case, my MBP has the AMD Radeon HD 6490m. Unfortunately, my warranty has expired. Apple said that they could fix it, but they will have to charge me for it. I currently run snow leopard version 10.6.8 and I've notice that this issue started to happen from the previous update.Should I update to Lion?  15-inch Macbook Pro 2 Ghz Intel Core i74 GB 1333 MHz DDR3Snow Leopard Version 10.6.8 (Early 2011)AMD Radeon HD 6490mIntel HD Graphics 3000 build-in
Info:
MacBook Pro, Mac OS X (10.6.8)
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May 1, 2012
my iMac(mid-2010) screen goes black soon after startup.i did notice some flickering about a week ago.i tried shutting it down,removing the power cord and all peripherals but it didn't help.i had done a software update a few days before the flickering started.
Info:
iMac (21.5-inch Mid 2010), Mac OS X (10.7.3)
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Jun 28, 2014
iMac os x Mavericks 10.9.3. I tried to boot up yesterday morning after completely shutting dwn the night before. Stays on grey screen with Apple logo. I tried safe mode, no luck, will not boot up in safe mode. I tried backing up to external hard drive from utilities, but it stopped and said something like couldn't perform function... I never used or set up Time Machine.
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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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May 26, 2012
I am getting the following message on my iMac, it happens when doing different things so can't pin-point when its happening.I get the following error report when I restart the matching
[code]...
Info:iMac, Mac OS X (10.7.4), 3.1 GHz Intel Core i5 100.12.42
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Mar 7, 2012
I have a HITACHI touro desk 3TB external hard dive connected to my iMac OS X version 10.6.8 Every time i start up the system it stays on a grey screen until I unplug the usb of the external hard drive then the system boots up normally. I have tried connecting different usb cables, plug in to different usb ports, and nothing works. I have other external hard drives and they don't give me any problems. is a pain plugging and unplugging the usb cable. Â
Info:
iMac, Mac OS X (10.6.8)
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Feb 15, 2010
My step mom has an iMac. The first gen intel one and the other day out of nowhere there was a white screen with a folder on it and now when you go to start up the iMac the screen just stays white.. What would be the cause of this and what should I do to fix it .. thank you
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Jul 15, 2008
so i go to turn my imac on tonight and it makes the normal noise when it always turns on but the screen stays blank(light blue)....after about 2 minutes this little picture of a folder with a question mark shows up in the middle of the screen. it keeps making this clicking noise as well. ive tried unplugging everything and restarting it here is a pic of what the thing that pop ups looks like [URL]
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Jul 2, 2012
I recently purchased a Mac Mini at the Apple store. I'm using an Apple bluetooth keyboard and trackpad. Problem is, when the mini goes to sleep, it won't wake back up. Nothing I can do apart from a hard restart by pressing the start button will wake the computer up. I don't know what to do to fix this. Is it something in settings?
Info:
Mac mini, Mac OS X (10.7.4)
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May 5, 2012
I have discovered that my Mac running OS X v. 10.7.3 is storing a screenshot about every 5 minutes while the computer is actively used. I cannot find anything in the Activity Monitor that looks out of place.Â
Info:
iMac, Mac OS X (10.7.3)
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Jan 2, 2011
Got me a Second Hand iMac g5 with OSX 10.6 on Screen is black. I changed Power Cable = no Result seen i opened and a thinny Cable from hard drive were not connected. I had to remove the Ram to do that,but no Result i opened again and found another thinny Cable from Broadband Socked comming out. I connected it but nothing happening i opened again with all Leads removed. I removed the Battery inside,pushed after 2 Hour such small Button inside,put Battery in Place,switched on and nothing happened. i pressed the power-Button twice,and on second Time the Screen went White and Fan blow as Hell,but stuck on that. I switched off and on and it was Black again. I disconnected the Lead and switched on after 5 Hour and nothing happens I removed Battery again,pushed after 2 Hour thinny black button inside and nothing when started With nothing happened i always mean "The screen is black",but the Start sound is and i hear a little Fan,and Keyboard reactes with Light on keyboard and with Ping on Computer if i push some Buttons.Mouse has light on Well. seems Screen works. I did not get the Software. It is Snow leopard on but i don't know if re-installing would help or if i need the Pack for 3150.- or what it cost. I also don't know if not Video-Card or logic board fails
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Aug 4, 2009
Let me start by saying I have swapped the ram in the computer and the problem persists. I've also tried resetting the PRAM. I have unplugged all devices except the keyboard and mouse. I have reformatted and installed OS X Leopard, Tiger and Snow Leopard. I have even encountered this issue while the computer was running from the install disk. I'm pretty sure software, ram and third party devices can be eliminated from the possible causes. The computer continues to run after the screen goes black. I am connected to it right now using screen sharing, so I know the computer is still working. Putting the computer to sleep and then waking it up temporarily brings the screen back until its next random blackout. I have opened the computer to replace a dead HD, so I suppose it is possible that I knocked something in the process, but I did that back in December and the problem is a relatively recent development. I would really prefer to fix this myself, if I could only figure out what the problem is.
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Mar 31, 2010
I have been experiencing some unusual problems with my imac. While on the internet today my computer crashed on me twice, the first time the screen just showed a bunch of vertical lines, the second it flashed some random colors then went black. After the screen change the computer was unresponsive. I have a bad feeling, is it due to overheating, a bad logic board or something else. This is the first time I have ever experienced this on a mac. Has anyone had any simiar issues? Or am I up **** creek? I can't really afford a new computer seeing that I just bought an iPad (it comes Saturday). I am not sure if my computer is still under apple care and even if it was I won't get it back by the time I have to go back to college. I attached a screen shot of my computer temps.
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Apr 26, 2010
When I turn my Imac, it goes from the white screen to a black screen, then blue and then desktop. The whole process is fast, but is not normal. (at least is not like my previous MBP or the videos that I have seen on youtube) At the black screen stage, I can see some boot up information, etc, It is fast so I am not able to read it all. It looks like when booting an old windows or dos machine How can I change this? Is this normal? It also shows the screen when I shut down.
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Mar 14, 2012
When I try to type an uppercase letter using the left hand shift key, the screen background turns black and no letter appears.
Info:
iMac, Mac OS X (10.5.8), power pc
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Mar 19, 2012
I have been limping along for quite some time with a recurring problem with my PPC Flat Panel iMac G4.Sometimes when starting up I would get a black screen. The unit chimes at startup but the screen would stay black.I found that I was able to fix (temporary) the problem by removing the bottom plate and pushing the reset button under the base.(After shutting down and unplugging the unit.) after the startup chime, the screen turned gray with a folder icon in the center with a blinking question mark.After shutting down and restarting, this happened again 3 times.On the 4th shutdown/startup it went back to the black screen.Repeated shutdown/restarts have no effect.Shutting down, unplugging the unit and pushing the reset button is also having no effect.I hear the startup chime every time. Black screen every time as well now.Â
Info:
iMac, Mac OS X (10.4.11)
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Mar 6, 2008
Recently my cooling fan has been running at what sounds like full speed and never resumes a quiet speed. I have not used it any differently than I have since I bought it (in January) and have not really added anything to it in the way of downloads.
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