Intel Mac :: Screen Gone Black - How To Run Apple Hardware Test
May 18, 2012
My early 2008 24" has suddenly developed a problem - screen has gone black (initially it was 'black' with backlight on, now not even a backlight) The machine has Lion installed but it came with 10.5.2. I can access the machine via screen sharing & it all runs fine so I want to determine what is wrong with it. I dropped in my original grey system discs, pressed 'D' on start-up, nothing. It seems Lion no longer supports Hardware Test from discs on older machines. How I can run hardware test on this machine?
Info:
iMac, Mac OS X (10.7.4), Early 2008 24inch 3.06GHz
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Apr 15, 2010
I've got a 2007 Macbook Pro. It's on its second graphics card (8600M GT), the first one failed on me a year ago. OS X 10.5.7, all firmware updates installed.
I think I have a new graphics card issue, but I can't prove it. In Front Row, after 10-20 minutes, often parts of the screen will start going black. Then it freezes. Sound works fine. It doesn't look like the same kind of wild distortion that I got when my GPU failed the first time, though, it just looks like things have been rendered incorrectly.
When Front Row finally quits, I've had black and white bars across my menu bar a couple of times. Once the computer then totally locked up and I had to reboot.
In Windows XP in boot camp, things are worse. I only use boot camp for games, since they use a lot of graphical power, it made sense that the problems happen there more often. After 15-20 minutes, the screen will start stuttering, then the keyboard/mouse will stop responding. The sound will hiccup a few times too. That lasts about 10 seconds, then everything returns to normal for a while (as little as 10 seconds, or as long as 5 minutes.)
The Apple Hardware Test (short and extended) shows no trouble. Techtool Pro shows no trouble. I ran the very thorough memtest86+, and it showed no memory trouble.
Can anybody give me any tips on definitively diagnosing this problem? Is there any kind of really intensive hardware test I can get (a live CD maybe)?
Second question, has anybody heard of Apple replacing a laptop that has had many faults with a brand new unit?
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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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Mar 15, 2012
I just bought my 27" iMac. It did not come with any install disks. I have tried everything to reach the Apple Hardware Test. Is it even possible to boot to it with a wireless keyboard? I hate to have to buy a new keyboard just to run one test. I can reach the Recovery HD, but the hardware test isn't there. (I know the computer is brand new, I just want to have the info when I will need it someday.)
Info:
iMac (27-inch Mid 2011), Mac OS X (10.7.3)
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May 7, 2012
How can I run AHT on my iMAC 21.5 inch, MID 2011 and Mac OS X Lion 10.7.3 (11D50)? There were no DVDs in the package, no restart key-stroke combination connected to internet-aht, no aht is included in the package I bought and downloaded from Apstore. One of the 4 rear USB ports seems to be death from the very first moment. I would like to use the AHT to see if this is some SW misconfiguration or is it a HW problem.
Info:
iMac, Mac OS X (10.7.3)
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May 28, 2012
I have a Macbook Pro 13 inch purchased refurbished thru the apple website. Is shows as early 2011 version. Boot Rom MBP81.0047.B27 It came installed with Lion. I have repeated crashes. I want to run hardware test. It will not load from internet and no CD/DVD was provided. If I hold down the D key before startup it eventualy comes up with the normal log in screen.
Info:
MacBook Pro (13-inch Early 2011), Mac OS X (10.7.4)
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Sep 6, 2014
Apple Hardware Test - Errorcode HDD-1378. Know what it means? My SuperDrive is acting up so it probably has to do with the drive.
Info:
iMac, Mac OS X (10.7.5), SuperDrive
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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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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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Jun 22, 2012
My computer started having problems some two weeks ago.First it was very slow then it blocked during the use of Photoshop.At that stage I used Apple jack to test and solve the problem and it worked.But two days later the problem came again as a verry slow start-up.I checked the disk and there was no problem signaled.I tried to boot the computer on the installation disk in order to execute the Hardware test...The test gave the folowing error code: 4HDD/11/40000004:SATA(0,0)
Info:
iMac, Mac OS X (10.6)
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Apr 9, 2012
I have a 17" unibody MBP (early 2009, specs below). It was running hotter than usual the other day, so I F2 booted into AHT to run a diagnostic. The status box within AHT showed 1 second into the 1st pass, and never got beyond that. Several seconds after that status message was displayed, the cursor froze. The time counter never advanced after that, and although I waited a long time, nothing happened. The test froze.
I've tried it several times more. It once worked, but every other time has frozen. Checking the "extended test" box, or trying to run in loop mode has made no difference - still freezes at "1 second".
I've had this machine for 3 years, OS's Leopard through Lion, and this has never happened before. I last ran a test, successfully, in January. I've not changed any components or suffered any damage since then. Memtest (ver 4.22) says my RAM is fine. (I ran this because the first portion of the AHT is the RAM component.) Aside from the aforementioned overheating episode, which disappeared, my machine's been fine.
early 2009 MBP unibody 17"
2.93 Core 2 Duo
8 GB RAM
750 GB HD
Info:
MacBook Pro, Mac OS X (10.7.3)
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Aug 24, 2014
Today i discover that when my macbook pro screen is black and i place light behind the screen, i can see through apple logo. Is it normal ?
Info:
MacBook Pro, OS X Mavericks (10.9.4), Iphone 5s
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Dec 3, 2010
Macbook: A1181 Core 2 Duo 2.0ghz 1GB RAM
DVD disk: Leopard 10.5 Retail install
Hard drive: dead (spins with clicks).
With regular startup I get the flashing question mark and can hear the failed hard drive click and spin. After getting the DVD to boot in the drive (it doesn't suck it in right away), I get an apple logo and pinwheel like I should, but after about 30 seconds it goes to a black (blank) screen and the DVD spins down, but not all the way. The computer is still on, but nothing happens.
Oddities:
<>If I start it with an iMac 10.4 DVD I can boot to the install screen just fine, but can't install because it's an iMac DVD. I can erase and partition the drive fine (not the dead one, another one I have).
<>Safe mode boot does the same thing, but takes 20 times as long to boot
<>Retail OSX 10.4 DVD does not boot at all, but that one might be for PowerPC computers. I get the flashing question mark folder.
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Dec 1, 2014
TTurned my Mac pro on with power button and screen is still black. Brightness is turned up, still no screen ...
Info:
Turned it on and off several times
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Jul 3, 2012
New to Mac computers. When trying to open computer after being in sleep mode, I clicked the mouse to open the password screen, & a blank blue/black screen appeared & the mouse timer( colored circle) appeared, as if to be waiting. I had to unplug the computer to reboot it. This has happened twice in 2 days.
Info:
iMac (27-inch Mid 2011)
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Jun 10, 2012
How do I change the iTunes screen display from 'white on black' to 'black on white'
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24" iMac
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Apr 17, 2012
Only way to recover is hard restart. Just downloaded Lion two weeks ago - problem started shortly after.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Mar 16, 2012
Ever since I've had my Mac, about three times a day my screen will go completely black after I've moved the cursor very quickly or in a herky-jerky motion. I don't think I'm pressing down on the right or left--it just seems to be some motion.
Info:
MAC 24" 2.66 mgz, Mac OS X (10.5.6)
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Mar 20, 2012
So when I try to log in, the screen goes black, after a few seconds, when I move the mouse around, press a few keys on the keyboard, the login screen comes back. But the same thing happens when i try to log in, it just keeps going black.
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Mar 7, 2012
my screen keeps going black randomly but everything in the background is still playing. When i press the power button twice it will go to standby and then turns on again, but the black screen keeps getting more and more frequent. Ive tried resetting the SMC and the command+option + PR thing but nothing has worked.
Info:
iMac, Mac OS X (10.6.8)
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Mar 17, 2012
problem of getting black screen on imac running 10.6.8?
Info:
iMac (27-inch Mid 2010), Mac OS X (10.6.8)
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Mar 23, 2012
Lately, as of two days ago. My iMac has been freezing and the screen just goes either black or another color that's on the screen. I was doing a conference call today, when my screen went black and I couldn't get the picture back. The audio ect worked fine, but the screen on my side went black. The computer has been freezing a lot since I upgraded the lion OS to the latest one. It runs faster, but freezes too much.
Info:Imac Intel duo, Mac OS X (10.7), 2 GB Memory
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Mar 25, 2012
Sometimes, when my iMac has been "resting" and I then move the cursor using track pad I get a stream of black squares on the screen. The more I move the cursor the more black squares I get. If I switch off and then on the screen is ok. This is an intermittent occurrence.
Info:
iMac, Mac OS X (10.7.1)
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Apr 9, 2012
Why does imac screen turn black?
Info:
Imac, Mac OS X (10.6.5)
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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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Apr 25, 2012
why is the screen flickering and then going black
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May 3, 2012
I have updaed to adobe reader 10.1.3 and now when I try to view .pdf's in safari or foxfire it just has a black screen. When I try to save as is says is doesn't recognize .pdf.
Info:
iMac
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May 5, 2012
For the past week, my screen goes black several times a day and I need to restart with the start button to restore.
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iMac
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May 31, 2012
I have a tiny black spot on my imac screen that is only noticable when background is white.
Info:iMac
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