OS X :: Black Screen With A Flashing White Line?
Aug 8, 2009
I have an iMac 2.8 24 inch, about Two years old running 10.5.7 , when I start the computer it shows the normal Gray screen for about 30 seconds, then the screen goes all Black , but with a small flashing white line ( _ ) in the top Left hand side corner.
It just stays all Black for ever , I then hold down the On / Off button and turn off the computer, I then hold down the keyboard '' option key '' and press the on button at the same time , then I get the option to start from the main HDD , I click the Icon and the computer then starts normally , and every thing runs ok.
Can some one please tell me what I have to do to get my iMac to start up normally again , Ive run Repair Disk permissions but the problem still occurs . Over the last few day's Ive been trying out a few new applications, so not too sure if this has any thing to do with this current problem
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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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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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Sep 21, 2009
i was trying to reformat my old mac mini, because i had lost the password and before i could reformat, it asked me for my password, when the dialogue came up, i click on details, and chose the second option down which i think was 'mac OSx installation disc 1'. my computer shut down, and now when i try to turn it on is flashing black and white every about 30 seconds.
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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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Oct 11, 2009
I don't know what else to do... Started sounding like a cd was running o something when nothing was in there, now that stopped, but im just getting a white screen with a flashing folder with a ? Its flashing between the finder icon and a ? and will not do anything else.
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Mar 22, 2010
there are two things that the macbook is doing to me. one is that sometimes when i move the screen up or down (the hinge is rather stiff) a white (thin) line flashes across the screen. but recently, while randomly browsing through the internet, the screen almost... i guess faded to a gray screen, but like gradually, and not like a kernel error, like the display just faded away. happened twice in a row, did a battery pull and now wont do it again.
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Sep 3, 2014
When I turn my MacBook Pro on, the colorful pinwheel shows up and then the screen flashes white and goes back and forth from my screen saver to the white screen andI can't get it to stop.
Info:
MacBook Pro, OS X Mavericks (10.9.4)
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Jun 13, 2010
I brought my iMac out of sleep today and noticed that there is a vertical line of broken flashing pixels going down the entire screen. The line is 1pixel thick and stretches from the bottom to the top of the screen.
Is there any way to fix this?
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Jul 6, 2012
When I log on to my Mac I get a white screen with a flashing folder showing a? What is wrong with it and what can I do.
Info:
iMac
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Mar 12, 2012
I was given a MacBook 13" laptop, new to apple computers though. At first I was told the laptop itself did not power on. I charged it overnight, and it will come on, however, only to a white screen with a file folder in the middle with a ? mark in the file folder. I googled the screen and got several choices, start in save mode, did nothing. I called apple, since it is a 2006 model computer, it is of course out of support, but she emailed me articles to follow directions. None of them did anything, since it was given to me I do not have the start up disks, just the laptop and the charger. I did notice that out of all the steps the only thing that did anything different was the "reset NVRAM/PRAM" it made speakers make a sound as it was starting up. Thats all it just still went to white screen and file folder.
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Apr 9, 2012
My computer seemed locked up, nothing would open. I had to force quiy everthing. I tried to normally shut it down and it wouldnt shut down. I held the on off power switch. When I tried to turn it back on It stays tuck on the white screen with a flashing folder icon with a question mark in it . Has my hard drive gone bad?
Info:
iMac (24-inch Mid 2007), Mac OS X (10.6.8)
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May 25, 2012
I have not been able to startup my iMac for 3 days. When I turn it on all I get it is a white screen. After about 10 minutes a folder with Question mark inside apears in the middle of the screen and it just stays like this. I unplugged everything from the computer except for the mouse and keyboard. I had this computer since 2008 and never had a problem until now.Please help
Info:
IMAC 24 2.8, Mac OS X (10.5.2), 2 GB RAM
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Jun 6, 2012
We did the most recent update that Apple produced and our iMac has yet to turn back on properly. We get a white screen with a flashing grey folder that has a question mark on it..
Info:
iMac, Mac OS X (10.7.4)
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Jul 13, 2008
My partner's PowerBook G4 (17-inch 1.67Ghz) which, of course, ended it's Applecare on June 28th, developed a glitch on the screen today: a white line that is 1 pixel wide and runs the length of the screen. It just started out of the blue - no dropping of computer, no power surge, no external reason. One minute it was fine the next it had this line.
Any body ever encounter a problem like this? And if so, how did you get rid of it (either repairing it via a technician or by oneself) and how much did it cost?
I'm betting it's a sign that it's time to get a new computer.
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Jan 19, 2009
I bought my Imac at the beginning of '06 and it's been great but today a small white line appeared running vertically all the way down the screen and over the dock and menu bar. it's white during boot up and then yellow after everything is loaded..does anybody have an idea what this is or how to fix it?
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Jun 21, 2014
I get is white screen with flashing question mark. I've inserted OS disc but it won't run.
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Nov 27, 2010
I received my computer back from them yesterday, but when i opened it it was COVERED in packing material? (Thats what they said anyway). After talking to them they said they would cover my laptop for 90 days from water damage or Accidental damage! Only problem is, my computer screen flashes black randomly.. Anyone have any experience with it? So far they replaced the screen and the logic board...
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Oct 28, 2010
My screen just started to occasionally have a flicker of a white line show up...
It doesn't happen that often, should i worry? Is it worth taking it into apple? (Under warranty still) Since its not consistent i wont necessarily be able to show them what its doing..
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Nov 7, 2010
now 8 months old macbook unibody (6,1) has a line missing in the lcd panel. Will apple replace it?
I really think it's a display issue. I've done the usuall supects (pram,reformat,repair premissions and everything).
And sometimes I get white boxes in the screen, but it passes the hardware test.
I've posted an screenshot with the line that's missing painted in red.
Edit: An screenshot of the mystery white box Edit2: Found out what is the problem of the lcd, it's one of that two polarizing filters that has fallen a little. Still not sure if apple will cover it
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Apr 21, 2008
Everything is perfect except a white back light bleeding in a form of a line from above 3-4 inches from the bottom of the screen. Its only visible in solid black background.
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Jun 7, 2010
It is random and is only across internet windows, not the entire screen.
looks like morse code, short and long lines.. just one line. it goes away on its own.
appears randomly.
iMac 10.4.11 roughly 3-4 years old.
Do I have pending monitor issues ?
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Jun 17, 2012
Have white vertical line in center of screen display. Do I need a new system or can it be fixed?
Info:
iMac, Mac OS X (10.6.8)
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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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Sep 3, 2014
basically i bought my macbook literally two days ago and it worked perfectly for the first day and it still does except for the fact that there is a mysterious black line on the screen that appeared from nowhere! i have tried restarting it multiple times and i have never touched the screen violently...when i take a screen capture it doesn't show!!! i could swear I've never even touched the screen.
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Jun 15, 2012
I installed several system updates on my 2007 iMac last night, running OS 10.7, and today I can only get a black screen with a flashing white power light when I try to start up. My computer will neither start up nor completely shut down, and my wired keyboard won't communicate either.
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May 18, 2009
So today I noticed a small black bar on the corner of my screen. I tried to get a screen shot of it, but i couldn't, like it was off the screen. However, my mouse dissapears under it when i move it there.It is a little hard to distinguish because it is the 2.4 ghz macbook aluminum, glossy screen so it has the black surrounding it, but it is definably there. This all along the right hand edge of the screen.
Although there is a chance it may have always been there, I am not so sure. I think there are lines along the top and left hand sides, but they are much smaller. again it is hard to tell. I am fairly sure that there is none on the bottom of screen. Is this normal, or what? I have applecare, and I didn't do anything to my macbook. Although it is getting me a little OCDish, and is slightly annoying, and I know these things on the screen tend to expand.
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Jul 8, 2010
I have a core i7 MBP with the high res display, and when the display is showing black, a horizontal green line appears on the screen. It is only visible when the screen is showing black or another very very dark color, and the line is not visible with the screen off. It isnt something on the screen, as rubbing it does not affect it at all. I cannot post a screenshot of it, because it does not appear in the screenshot (it does on my screen, because the line is there physically, but on other monitors it is not visible).
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Jun 10, 2012
I just got a thin black line across my screen. It was normal this morning.
Info:MacBook Air, Mac OS X (10.7.4)
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Sep 13, 2010
I woke up to my MacBook fan going nuts. Had an error message on the screen that said something about a disk error. The machine wouldn't do anything (force quit, launch app) so I hard powered down. Now.....NOTHING. All I get is the white screen, followed by the flashing folder. Here is what I have tried so far.
I already booted from the restore cd that came with it and opened disk utility. The hard drive shows up as something like disk1 but not "Macintosh HD."Tried to repair permissions and got an error message. Thought then to do an archive and install......and the HDD isn't even a viable option to install the OS on.
I had the original (but smaller) HDD that came with my MacBook, so I put it back in and everything booted up just fine and is back up and running. (Thank God for MobleMe that had all my contacts, etc on it). But I still have some info on that other HDD that I need. I ordered a usb enclosure for the drive to maybe try some recovery, but it seems to me that the HDD failed or something. Is there anything else I can do?
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