IMac (Intel) :: Desktop Fan Comes On And Then Screen Goes Black Shuts Computer Down Every 5 Seconds

Jun 4, 2014

I have a 27 inch desktop. Upon turning the computer on within seconds the fan comes on. Then it goes to a high fan. Then it goes to a black screen. Then it shuts off. Then if you click the mouse it will come back on. This cycle repeats itself every 5 seconds. Only one time in the past month did it turn on normally and run for me.

Info:
iMac

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IMac :: When Click Shut Down It Just Shuts Down The Whole Computer Not Get To Desktop?

Jun 5, 2009

start up the computer and all is fine it is really cool how you dont see the black screen or anything it is all smooth looking with the setup boxes but when it gets to where you should have the normal desktop this wierd program comes up instead. i cant see the start button or my computer or anything it is like some kind of other program on top of it that i cant quit. i have tried everything but when i click shut down it just shuts down the whole computer not getting me to my desktop.

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Intel Mac :: Desktop Restart Shows Flickering Black/white Screen, Then Black

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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Macbook Pro Shuts Off After Few Seconds Of Gray Screen

May 15, 2012

I came home to discover my power cord had died and my laptop turned off due to no power. I used a friend's power cord to turn it on later that night and send some emails. I bought a new power cord the next day, plugged in, and turned the laptop on. It stayed on the gray screen with a spinning wheel beneath the apple logo for a while. I restarted it and it turned off after a few seconds of the gray screen. An empty bar flashes twice horizontally at the bottom before the spinning bar begins.I tried booting in safe mode, but it would just stay on the gray screen. I tried doing shift+command+v and received a message about keys out of order and disk error full, can't repair. I was able to boot from the install disc, and when I click "Repair Disc" I get the same erros. Not sure what to do now?

Info:
MacBookPro, Mac OS X (10.6.4)

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IMac (Intel) :: When Click To Sleep Computer Shuts Down Instead

Jun 30, 2014

When I click on my Imac to sleep, it shuts down instead...

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Intel Mac :: Computer Screen Goes Black

Apr 16, 2012

My computer screen goes black but computer is still working ( music playing, video playing etc.) later the screen saver comes back on in 5 to 10 minutes and I can see everything again. This can happen several times during a computer session, any ideas what the problem is?

Info:iMac (24-inch Early 2008), Mac OS X (10.6.8)

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Intel Mac :: Screen Goes Black For Just Second And Then Returns To Normal Desktop

May 15, 2012

Screen will go completely black for a second then back to normal display.Makes no difference what application I'm using. Within last 10 minutes went black for 4 times. Does not power down, just screen goes black.Contacted support via phone, they had me shut down, unplug power cord, then plug in and start. Appeared ok while I was on phone with support.Didn't use imac for 1 1/2 hours, now I notice it going black again.

Info:
iMac, Mac OS X (10.6.8)

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IMac (Intel) :: Shuts Down During Load Up Screen

Aug 24, 2014

I just got home and I realized the power was out. I bought this iMac literally like two months ago (I actually bought one two months ago but it wouldn't even turn on so they gave me a new one) It was working perfectly fine, and I was writing a report. I left the computer on and left the house only to return hours later with the power out, and when I turn it on it shows the start up screen with the Apple Logo, the little progress circle, and a progress bar that fills up to the end everytime but once it fills up to the end it stays there for a few minutes then the computer shuts off. 

info:
iMac

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MacBook Pro :: Black Screen And Beeping Every 5 Seconds

Jun 26, 2014

I have a mid 2012 13" MacBook Pro my screen turned blacked and will not turn on with constant beeping every 5seconds! It was just working fine yesterday!! I read online that it may have been the memory ram so I replaced it and it still continues to do the same thing!!! I bought the MacBook used about 3months ago!

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PowerPC :: IBook G4 Screen Goes Black - Shuts Down

Nov 27, 2006

My wife has a three-year old iBook G4 and yesterday while she was doing some work, the screen just went black. By the time she brought it to me the machine was shut down. I hit the power button and it started to boot up, but about five seconds later it shut itself down again.

I kept playing with it and I was able to get back in to OS X and I played with it for a few minutes and all seemed fine. I then shut the screen and put it to sleep, then when I tried to wake it back up it shut itself down once again.

After a few more tries of getting it back in to the OS I was able to get all her files off the hard drive, but the problem is still there.

My guess is that it's the logic board, but that's just a guess.

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IMac (Intel) :: Why Does Computer Turn Black When Wake It Up From Sleep Mode

Jun 19, 2014

When I need to go somewhere or just eat lunch, I put my iMac to sleep. After that, when I come back to wake it back up, it stays black.

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MacBook Pro :: Black Screen With Cursor For 5-10 Seconds When Trying To Wake Immediately After Display Sleep

Jun 23, 2014

I've noticed that when my rMBP (late 2013, Mavericks) turns off the display automatically while on battery (as configured via Energy Saver) and I try to wake it immediately, I get a black screen with the cursor, rather than my password/unlock screen.  It remains a black screen, with the cursor moveable, for 5-10 seconds or so, and then the password/unlock screen will appear as usual. 

This does not happen if:I don't try to wake the display/computer immediately after automatic display sleep (e.g., I wait 5-10 seconds and it's fine)I turn off the display using a hot corner and immediately wake the displayI put the computer to sleep by closing the lid and immediately wake it by opening the lidI select Sleep from the System/Apple menu and immediately wake it by pressing a key or clicking on the trackpad 

Why automatic display sleep is causing this temporary black screen?  I currently get around it by setting the time for automatic display sleep while on battery to 10 minutes instead of the default 3 minutes to minimize the chances of needing to immediately wake the screen.  I'd like to keep it at 3 minutes if possible to maximize energy savings, but the temporary black screen is really annoying if I didn't really want display sleep and consequently have to wake immediately.

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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. 

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

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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?

Info:
iMac

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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?

Info:
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" ...

Info:
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?

Info:
iMac (27-inch, Late 2013)

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IMac (Intel) :: Screen Went Black When Printing In Fluo Color

Dec 2, 2014

What is happening to my computer.  This is the 2nd time it does this: all of a sudden the screen becomes black  with reverse fluo colors.

I have to force quite with the push button & restart it.  I repaired the permissions & restarted it.  It's working again, but I am wondering if I have an alien in it.

Specs details:

iMac, 3.06GHz Intel Core 2 Duo, 4Go 1067 MHz DDR3, running Os X 10.6.8

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IMac (Intel) :: Screen Had Vertical Black And White Line And Is Now Blank

Sep 10, 2014

My screen had black and white vertical lines pop up over the entire screen then went blank and now at a restart the password then loading spinning circle happens then I get a blank white screen.It's a 27 in Intel iMac that is about 2011/12 purchase

Info:
iMac (27-inch Mid 2011), OS X Mountain Lion

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IMac (Intel) :: Screen Goes To Normal Gray With Apple Logo And Spinner Then Goes Black

Jun 5, 2014

Upon start up my screen goes to normal gray w/apple logo and spinner then goes black. Cursor is visible and still is moveable but nothing else. I safe booted and bar came up also but then back to black screen. 

Info:
iMac, Mavericks upgrade

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IMac :: Computer Shuts Down After Trash Emptied

Aug 17, 2010

I have an external hard drive connected to my iMac and whenever I want to delete something from the hard drive the iMac gets a gray box message saying it needs to shut down and then it just turns off. How can I delete those files without getting that message?

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IMac (Intel) :: Desktop Photo Does Not Take Up Whole Screen

Jun 5, 2014

When I start up my iMac the desktop photo only takes up part of the display area in the upper left. The Dock is also showing up on the right side of the desktop photo and not on the right hand side of the screen where it should be. All my desktop file icons are where they should be.  

If I switch accounts and switch back the display is back to what it should be. This just started happening in the last week or so and only happens on one account on the computer. I have not made any setup changes or installed any software before this happened but I did install the latest OSX update right before this started happening.

Info:
iMac, OS X Mavericks (10.9.1), 27in, 8GB RAM. 2.66GHz Core i5

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IMac (Intel) :: Extend Desktop To MBP Screen?

Jun 17, 2014

I have both my iMac and MBP connected via Thunderbolt. I want to keep my iMac as my primary and extend my desktop into my MBP.

Info:
iMac, OS X Mountain Lion (10.8.4)

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MacBook Pro :: Screen Won't Turn On - Computer Starts But Black Screen

Jun 27, 2014

Computer starts (keyboard lit, music plays, caps lock light on), but no screen. I need to open and close 2 - 30 times before the screen will turn on. Once on, the computer works perfectly. I've tried PRAM and safemode reset.

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OS X V10.7 Lion :: 27 Inch IMac Screen Shuts Off During Screen Saver

Apr 26, 2012

My 27inch iMac screen shuts off during screen saver and does not come back on unless restart machine?

Info:iMac, Mac OS X (10.7.3)

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IMac :: Computer Making Loud Constant Noise / Sound Coming After 30 Seconds

Nov 17, 2010

My family just recently upgraded from an old PC to this 27" iMac, during the early part of the summer. While using it over the last little while, I would notice a noise that sounded like a harddrive spinning or possibly some sort of a fan noise. The best way to describe it would probably be as digital noise. It's not incredibly loud, but it's a decent volume, and can get quite annoying. It has a little bit of a squeak to it.

Over the last little while, it's become more constant. When the computer is in use, it'll usually occur quite often. It's quite annoying and obtrusive when I'm watching videos and I'd like to know what it could be.I think our computer is still under warranty, so I'm hoping to find out if it is something wrong, so I can get it replaced.

I've also been wondering if it's a fan, or a regular noise. However, it's so constant that I'm starting to wonder. The other night, I was watching a video and it seemed like it was coming on every 30 seconds for a long span of time. We don't run any memory heavy programs on this computer. If anything, we're just using Firefox, iTunes and/or Messenger. Sometimes Office. There's little to nothing stored on this computer, as it's brand new, so most of its memory is free.

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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?

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

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Power Mac G5 :: Shuts-down A Few Seconds After Start-up?

Nov 21, 2007

I've got a strange issue with my PowerMac dual 1.8GhZ and I can't figure out where it's coming from.Last Saturday I experienced a Kernell Panic while using Safari and the Dictionary (MacOS 10.5.1).Since then, whenever I try to start my computer, it shuts itself down while the grey screen with the Apple logo is on screen. However, this isn't always the case:I can use my computer 'normally' if I press the option key at start-up and manually choose my startup disk.

I can boot from a Panther or Tiger installation disk, but not Leopard.If I try the hardware test the computer shuts itself down in the middle of the test.TechTool works and didn't find any issues with my computer. Nor did Disk Utility.I tried to erase both my internal hard-drives and do a clean install of Tiger, but the problem is still there (I have to press option at startup).I tried to reset the PRAM and Cuda/PMA. Doesn't resolve the issue.When I tick 'Restart automatically after power failure' in Energy Saver my Mac will indeed restart, meaning it thinks there was a power failure.Any idea what it might be? And why it only happens in certain situations?Do you think it's a hardware or a software issue?

Information:
PowerMac G5 dual 1.8GhZ
Mac OS X (10.5.1)

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