IMac :: G5 With OSX 10.6 Black Screen

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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OS X V10.5 Leopard :: IMac Screen Went Black - Starts Up With Black Display

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?

iMac (20-inch Mid 2007), Mac OS X (10.5.8)

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IMac :: 2006 Screen Goes Black?

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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IMac :: Screen Goes Black And Unresponsive

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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IMac :: I5 Boot Up Black Screen

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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IMac PPC :: Screen Goes Black By Using Shift Key?

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.

iMac, Mac OS X (10.5.8), power pc

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IMac PPC :: G4 PPC Black Screen On Startup?

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. 

iMac, Mac OS X (10.4.11)

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OS X V10.7 Lion :: IMac Screen Goes Black?

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.

iMac (21.5-inch Mid 2010), Mac OS X (10.7.3)

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IMac :: New 21.5 Inch ... Getting Random Black Screen

Sep 24, 2010

The screen randomly turns black without any major reasons. It doesn't seem to be a sleep mode/screen saver thing as the music continues to play on. I can adjust the volume or pause the music with the keyboard but the screen just won't turn back on. I have to shut it down using the power button and it happened several time the last couple days. Anyone else experience the same thing and got a solution?

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IMac :: Black Screen After Bootcamp 3 Install?

Dec 1, 2009

I decided I was going to install XP on a bootcamp partition tonight and everything went fine until I installed the Bootcamp 3 software. After installing the Bootcamp drivers the machine rebooted and I ended up with a black screen in Windows. I did hear the XP welcome music so I figured it was a display driver issue. I rebooted into safe mode and deleted the ATI 4850 driver and restarted. After removing the bootcamp driver everything was normal again other than the fact that I only had the default Windows drivers running.

What am I doing wrong? I installed XP off of an XP disc with SP2 already on it and ran the Bootcamp install off the Snow Leopard disc. Finally, not sure if this matters, I am running one of the new i7 iMacs.

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IMac :: Strange Black Lines On Screen?

Apr 18, 2010

See the pictures. They look almost like ink but no ink has been near the screen.Tried cleaning the screen but with no luck. It lies on top of any open window.

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IMac (Intel) :: Boots Up And Then Screen Goes Black

Jun 22, 2014

My imac boots up and then the screen goes black, i have made a short video to show the error...i have also run disk utility and it comes back with no errors. URL....

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IMac (Intel) :: Black Screen On Wake - OS X 10.9.3

Jun 1, 2014

This just started yesterday (May 31st). I keep everything updated as it comes out and nothing new has been installed in the last couple of days.

When I need I wake up my iMac (now requiring a keystroke or mouse press instead of just moving the mouse), the screen comes up black, but the cursor is there and moves around fine. 

It stays black for a while (15 seconds or longer, but it feels like forever) and then it finally comes up completely. 

iMac (27-inch Mid 2011), OS X Mavericks (10.9.3)

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Desktops :: IMac G3 Slot Loading - Screen Go Black?

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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IMac :: Black Screen Display When Wake Up From Sleep

Dec 21, 2010

For the past few weeks it has been going to a black screen when trying to wake it up from sleep. Either I've put it through too much work lately editing all these photos and its really tired. So, often it wakes up normally and functions fine, well, not really. It is seemingly very slow. It requires a lot of time (more than before) to open up a program or it gives me the "spinning wheel of death" when trying to go to a different page on the internet or open up a folder on my desktop. Amongst other things that require it to think. So It's just a lot slower in general than before.

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PowerPC :: IMac G5 Failing To Recognize New Hdd - Only Black Screen

Jan 3, 2009

I have an rev. A iMac G5 that was purchased in January of 2005. The applecare has long expired. However, in May of 2008 due to factory defect Apple replaced the logic board, power supply and super drive [URL]. In December 2008 after experiencing problems with my hard drive I took my computer to the apple store. There they said it was dying and it would be cheaper to replace it myself. After purchasing a seagate hdd [URL] my computer won't recognize it. It stays at the black screen while the power light glows. After a few minutes the fans kick in at full force. I tested the hdd in another iMac G5 rev. B and it works fine. Any ideas on what the problem is or how to resolve it?

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IMac :: 24" Black Screen Flicker - Is It Lcd Fault

Jul 29, 2010

Recently i've started to experience my iMac screen flickering for approx 2 seconds, and then turning back on. I was wandering if this was a common problem with this model of iMac (purchased mid-09, 2.66ghz 4gb ram model). I had read of such a problem with the new 27", and in some cases even with the 21.5".

I have only recently begun to use the iMac for relatively graphically-intense tasks, and was wandering if perhaps it could be a dying graphics card (or perhaps it was always faulty, but the lack of intensity of any programs run never pulled it up originally?), or if maybe it was an issue with the LCD?

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OS X :: IMac Screen Black. It Got Stuck In A Loop And Froze.

Jul 30, 2010

I was playing Diablo II and my screen froze, and the same half second blip of sound kept playing over and over. I couldn't even force quit, so I held down the power button until it turned off.

Now, it won't turn on. When I press the power button, there is no chime. Oddly there are an inordinate number of fan wooshes. Like, I hear a woosh from the right, which is normal, but then I hear a woosh from the left, then another in the middle! I am being bombarded with wooshes!I've tried holding alt, or holding shift, or holding alt+s while starting up. No dice, although I do get fewer fan blasts, which is normal.

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Software :: Black Screen Leopard 10.5.2 Intel IMac

May 7, 2008

Middle of last month I bought a 20" IMac. Everything was fine up until about 1 week ago when the screen went black. I clicked on the mouse button several times only to have a password box pop-up. After filling in the response, all was fine.

Next, same scenario but the password box didn't appear any more. The only way to get the screen back was by a forced restart.

I turned off the screen saver, set the 2 controls in energy server to off, unchecked the box at the bottom left & put "auto login" to to on the Accounts window.

Problem continued.

Next move was to zap the pram, this was 2 days ago. The screen didn't go black but often asked for my pw. It's now back to its beginning phase which is a forced restart !!

I was told that it was due to Leopard 10.5.2 & am considering going back to 10.5.1

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IMac (Intel) :: Display Black - How To Get It Back To Log In Screen

Jun 2, 2014

Black screen on my iMac, how can I get it back to log in screen?


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IMac (Intel) :: Screen Has Gone Black Running OS X Mavericks (10.9.3)?

Jun 3, 2014

My imac screen has gone black?

iMac, OS X Mavericks (10.9.3)

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IMac (Intel) :: Black Screen - No Bootable Device

Jun 17, 2014

My beloved imac desktop just started this after a brief power outage (it didn't affect my husband's imac) or any other machines in the household. I've tried booting while holding the 'option' key but it still goes to "no bootable device" ...

iMac (21.5-inch Mid 2010), Mac OS X (10.6.3)

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IMac (Intel) :: Has A Black Screen With Mouse Arrow

Jun 4, 2014

I tried logging in and I get a black screen with the mouse arrow only. Why does this happen?

iMac (27-inch, Late 2013)

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IMac :: Shows Black Screen - Booting With Windows Partition

Nov 22, 2010

Just installed Windows XP using bootcamp and usually no problems switching between operation systems. Recently started using an USB modem for my wireless internet connection. Internet works on both Mac and windows through the modem. Now the problem is whenever I restart or switch on my computer, it shows a black screen if I choose windows partition to boot. No problem if I start through mac partition. If I unplug the USB modem, everything goes fine and I have to plug the modem after starting windows. Is there any solution so that I can permanently plugin the USB modem and avoid booting problem?

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OS X :: IMac Bootcamp - Stuck On Flashing Underscore Of Black Screen

Jul 24, 2009

I tried to install Windows 7 via Bootcamp a couple weeks back, but shortly after it failed, I deleted the Bootcamp partition in Bootcamp Assistant. However, whenever I want to boot my computer, it tries to go into the Windows Installation, but it gets stuck on the flashing underscore on the top left of the black screen. Henceforth, whenever I want to boot into OSX, I have to hold down both ALT keys. is there any way of fixing this so the iMac boots STRAIGHT into OSX (like normally)

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OS X :: IMac 2007 Aluminum RAM Installation - Get Black Screen With 2 Gig Stick

Sep 8, 2009

I bought my aluminum imac when it was released in late 2007. I had a 1 gigabyte stick up until now, but I decided to upgrade to 2x2 gigabyte sticks. When I took out the 1 stick and placed the new ones in, my computer would sound like it turned on, but the system really did not boot up. I have tried many configurations to see what the problem with the RAM is, and all I could figure out is that the computer will only boot up if the original 1 gig stick is in one slot. I checked both sticks with this, and they seem to register on my mac when I check the "About This Mac" section. Basically, I get a black screen if I use only a 2 gig stick, or both 2 gig sticks. I can have a maximum of 3 gigs so far, but I really would like all 4 that I paid for. I'm not so sure that it's a problem with the ram, especially because it is recognized by the system, but it can't boot up the system, so I am simply dumbfounded. Anyone have an idea what the problem is? I just recently installed Snow Leopard prior to getting the RAM if that has any importance.

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IMac :: Black Smudges On Screen / Switching Between The Hard Drives?

Oct 26, 2009

I have had my iMac for about 4 months, i have been using it as my main desktop since. I have noticed black smudges, kinda like finger prints on the screen that would not go away after cleaning it with a damp cloth. I removed the glass panel and cleaned inside the glass and the problem still remained.

This is not the main issue, i can live it with. I have two iMacs with the same specs, one is in my main home office that i used most of the time while the other is my home that i use not that much. The smudges does annoy me when i watch movies a little bit but its not enough to get me to replace my mac. I was thinking since i used my office iMac more is it possible to switch the hard drives on them so that i get all the info from my office iMac onto my home iMac without complications?

Since i dont use the home iMac as much as the office one i can tolerate a few black smudges more and i would have an iMac in the office that looked new.If i switch the hard drives will it be as if i switch macs and if anyones knows how to fix the black smudges it would be a great help.

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PowerPC :: IMac G5 1.6 Start Up - Screen Remain Black - Fan Goes Into Overdrive

Oct 27, 2009

I am currently experiencing problems booting up my imac 17-inch, 1.6GHz (2004 model I think). When I hit the power button the machine starts but the screen rmains black and after about 3 mins of this, the fan goes into overdrive! The only way I can turn the computer on at the moment is to remove the casing and use the on switch located inside the the machine, although this is no guarantee it will work, sometimes it does but the majority of times it will be the same black screen as before. All I am waiting to hear is the part in the top corner (hard drive~?) to click into gear and then it's fine, and the machine seems to work perfectly. But this is not a solution and I fear it is only a matter of time before the machine just explodes altogether

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OS X :: IMac Only Booting Black Screen After Attempting To Install Windows 7?

Nov 20, 2009

what can I do about his to boot back into OS X again. Holding down buttons (eg option) will not do anything.

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IMac :: 20 Alu - Black Screen - Graphics Card (HD2600) Failure?

Mar 19, 2010

I installed USB Overdrive (a program), I clicked on restart and my iMac never got up. When I start it, the HDD and fans do work. But there is no boot sound, and when I change sound levels, I cannot hear it. I think, it never makes it to OSX. It does not load the OS. I dont think it is Graphics card (HD2600) failure.

When I try to reset PRAM, nothing happens. Usually I must hear it restart again with loud boot sound but it never happens. Also my keyboard does not seem to work, as the CAPSLOCK button does not light up, when pressed. I changed RAM to different moduls, still the same. I checked the iMac RAM on a different computer, it works. Maybe USB Overdrive killed the USB slots? As my USB keyboard does not seem to work

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