Vertical lines on LCD - Black screen, goes white, fades to black again.

My 1Ghz G4 15" Imac is having LCD issues. It is in perfect working order, boots, runs fine on an external monitor via the adapter in back. I've read tons of issues with the black screen, but this sure looks a lot like a damaged cable issue, similar to an iBook when it starts to fail from wear. When the iMac is started, the LCD backlight comes on, the screen stays dark with the exception of a row of vertical lines starting about 2" over from the left edge, they appear to be 1 pixel wide and there are enough to make a 2" or so 'stripe' Each line is a different color, and they aren't the same from restart to restart. If the iMac goes to sleep the LCD shuts off and upon waking it shows the lines again, only the LCD will gradually 'bloom' full white (except for the lines) and then gradually recede to a purple, then black again. There does appear to be some damage at the base of the chrome stalk where it goes into the unit, with the seam split open slightly and the metal bent.
Seeing as how it's otherwise fully functional, and the LCD isn't cracked or otherwise 'dead', could it be a bad cable connection? Ideas? Thoughts? resetting PRAM and NVRAM did nothing, but again it works fine with an external hook up.
Thanks in advance!
IMAC G4 1GHZ 15" Mac OS X (10.3.9)

MacBook Pro (Early 2008): Dark bands showing intermittently on built-in display
MacBook Pro: Distorted video or no video issues . The affected computers were manufactured between approximately May 2007 and September 2008.

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IPhone 3G screen goes white with thin black moving lines.

iPhone 3G screen goes white with thin black moving lines.What gives?
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Why is my screen going white and then black?

Since Wednesday [two days ago] my phone has been acting like a dying television. The screen will go white and then black and then it won't respond. When I am able to get the screen to come back the picture freezes, jumbles, and will not respond to my touch. I have the 32GB 5C with the most recent updates installed. The top two corners of the screen are also raised in comparison to the bottom corners. I've heard from a friend that my battery could be swelling and was wondering if maybe this was also part of the problem.
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Could be a graphics chip issue. If the machine is newer than October 2011, boot with the 'D' key on its own. Otherwise find the original installer discs, or use this tip to find the age of the machine to make sure you can get the right hardware test with the 'D' key boot. You can either call AppleCare for the original discs, or see if it is available from this link:
https://github.com/upekkha/AppleHardwareTest

Black screen with white vertical lines

Have a Architect firm that uses Vector Works. His Mac crashes a lot, with a black screen or a black screen with white vertical stripes. 24" iMac 2.8 intel 4GB Ram and running snow Leopard and was doing the same things on Leopard.

try doing a smc reset by doign the following
turn off computer
then unplug it form the back of the computer
then hold down power button for about 10 secs
then plug it back in
then do pram reset by doing the following
press power button then imediatly press down the following keys
command+option+p+r
till you hear the beggining chime twice
if that doesnt work id be looking at getting it in to get looked at

Black screen with white flashing line on startup

~computer info~
Mac OS X Version 10.6.7
2.66 GHz Intel Core 2 Duo
4GB 1067 MHz DDR3
24 in. Montior
Startup disk: Macintosh HD
~Partition info~
FAT32 Windows XP
~issue~
Hello; I've recently encountered a problem with bootcamp that I can't find a solution to... Every time I start up the computer in boot camp, all I get is that black screen with the white flashing line. It comes up, goes to a plain black screen, then quickly comes up again. It never stops, either. I've let it run, and it won't finish.
I've had the partition for MONTHS now, and nothing like this has happened. I've had it since I upgraded to Snow Leopard awhile back, and needed to re-partition the drive. I literally had been using it the day before it happened, and the only thing that happened was that I got that "Windows Security 2011" malware, but I got rid of it fully (As I've gotten it 3 times this month). The other two times I got it, it didn't do anything. I fixed it, and went on with life. But is it possible that it broke something in the partitions inner files this time?
I ran disk utility, and it said the partition was broken. After verifying it and confirming this, I did "Repair Drive", as it allowed me to. It finished with no errors and said it completed, so I tried to go back into the partition, but it gave me the same results.
To be honest, most of my stuff is on my External Harddrive, so re-doing the partition is only going to be time used to me. But I still DO have things on there, and it'd be a pain to transfer them back and forth between the Mac and Windows partitions... I'd really like to know if there's anyway to fix this, or if it's just going to fall back to me re-partitioning the drive...
Thanks for the help in advance.

That blinking line is a "cursor." It's only supposed to show for a second or two as your iMac switches to and then starts Windows. But as you indicate here, it's not getting past the cursor..
Disk Utility can repair FAT volumes, but it cannot correct issues caused by corrupted items which, if the volume was repaired, there may be some.
Since we are dealing with a Windows boot partition, it's entirely possible that the repairs inadvertently corrupted the data Windows needs to start and run. It's also posible that Mac OS, in fixing the Boot Camp volume, overwrote the existing boot record in the Windows partition with a generic, though non-bootable version.
Windows' own CHKDSK should have been used to make the repairs rather than the OS X Disk Utility, which would have avoided this worst-case scenario in data recovery. CHKDSK has a special version of itself on the Windows disc, which may be accesed by using the Windiws Recovery Consile upon pressing R during the "Welcome to Setup" screen.
Though it appears ftom my position here that you will need to reinstall XP, it may yet be possible to recover data that hasn't been copied to the external HDD. For this task, I'd like to recommend that you start up in Mac OS for the time being, and pull any new or changed items from the Boot Camp volume except for installed software; the latter are nearly impossible to transport with reasonable accuracy, and should instead be reinstalled.
Once you have what you need, format your Boot Camp volume and reinstall Windows, this time selecting NTFS as your filesystem. NTFS is the preferred option for Windows in general, thiaks to its innate file access controls as well as the ability to compress or encrypt data "on the fly." NTFS can be read by Mac OS X, but not written from it, thus NTFS volumes cannot be altered except by Windows itself.. But it is also a requirement if you plan to upgrade your unit using Windows 7 in future.
Nate

Itunes 7.0.1.8 / xp --- momentary black screen w/white lines at startup

I upgraded to itunes 7.0.1.8 about a week ago. It's been fine, except now when I start up itunes a black screen with white lines flashes momentarily, then everything reverts back to normal. I'm pretty sure it just started happening in the last couple days. Also, I just noticed that it only seems to happen when itunes starts up maximized. Otherwise, it's fine. The only thing out of the ordinary that I've done recently is to run an old DOS game that I never ran before. I guess I'm concerned that maybe the game may have done something to cause this. Anyone else out there getting the black screen with white lines at start up?
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UPDATE/EDIT FROM PREVIOUS POST:
Ok. The new 7.0.18 does repair the volume slider audio issue. HOWEVER, Simply installing the new update (at least for me) did **NOT** fix the problem. After posting my previous post, I tried to remove Quicktime and iTunes completely and try reinstalling.
It turns out that when I uninstalled Quicktime from Add/Remove Programs, it didn't remove all the Quicktime files and it was not reinstalling Quicktime afterwards!!
I only noticed when I downloaded the standalone version of Quicktime and tried running it and it said a "newer version" was on my computer, though it did not show up on my Add/Remove Programs file listing.
So I looked in the usual places and found that I had a Quicktime folder remaining in the Program Files folder and one in the C:\Windows\system32 folder. I also had to manually remove the following files from the C:\Windows\system32 folder:
Quicktime.qts, QuickTimeMusicalInstruments.qtx, the Quicktime.Resources folder, QuicktimeVR.qtx and the QuickTimeVR.Resources folder.
The main problem is that iTunes didn't let me know there was an issue with the QuickTime installation. It just wouldn't run iTunes. There should have been a notification.
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However, there is a LOT of skipping occurring that never happened before. Not sure what's up with that. CPU usage stays low and then I get a few skips per minute...UNACCEPTABLE!!! That didn't happen before and that issue will still need to be fixed. Until then, back to WinAmp. Thx a LOT Apple...you *#^@ing hosers!

Blue and gray/black vertical lines on start up screen.

At start up my 2008 MacBookPro brings up a blue and black/gray vertical lines covering the entire screen. It has a large image of the power button and tells me "You need to restart your computer. Hold down the Power button for several seconds or press the Restart button". We've tried that. It restarts, makes the start up noise and gives the same prompt with the same blue and gray vertical lines in the background. Any idease on what our problem is?

MacBook Pro (Early 2008): Dark bands showing intermittently on built-in display
MacBook Pro: Distorted video or no video issues . The affected computers were manufactured between approximately May 2007 and September 2008.

I have OSX 10.5.7 on my Intel Mac. When I try to login using the correct password the screen goes white and just returns back to the login screen. It does not jiggle like when you enter the wrong password.

I have had a number of issues with my Intel Mac recently and had to reboot using disk utilities, safe mode, OSX recovery, but always come back to the login screen but when I type my password the screen goes white and returns to the login screen. My password is correct and the login does not jiggle as it would if the password was wrong. Please advise,

Back up all data if you haven’t already done so. There are ways to back up, even if you can’t log in. Before proceeding,you must be sure you can restore everything to the state it’s in now. If you’re not sure you can do that, STOP.
The procedure below may spare you the need for a clean reinstallation of OS X. If you don't feel comfortable carrying it out, don't. try.
Briefly, you need to delete the following file:
/var/audit/current
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Boot in single-user mode by holding down the key combination command-S at the startup chime. If you’re using an external USB keyboard, it must be plugged directly into a built-in port on the Mac, not into a hub. Release the keys when you see a black screen with scrolling white text. In this mode, there’s no graphical interface; just a command line. Initially, you can’t make any changes to files.
When the text stops scrolling, and you see a line ending in a pound sign (“#”), type the following command:
mount -uw /
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Next, type the following command:
rm -i /var/audit/current
Press return. You should get the following output:
remove /var/audit/current?
If that's not what you get, STOP. Type the single letter N, press return, and try again. Otherwise, type the single letter Y and pressreturn.
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Credit for this solution to ASC user AnthonyTW.

Black Screen with white text at startup (??)

Hello All:
I have a 2010 15" MacBook Pro, just got it in June. Had to send it in for a logic board replacement and now have it back. Everything works great except now instead of having the standard Apple greyish startup screen, I have a black screen with white text that scrolls through all of the startup stuff. I figure they changed some line on a plist somewhere so they could watch the startup and make sure everything was OK, then forgot to change it back.
Although I know it is good to know what's going on under the hood, I would rather it started up the regular way. Anyone know how to switch it back? I would call Apple, but would rather not sit on the phone for a long time for what I believe is probably a very simple fix. I did a search but couldn't find my problem listed....
Thanks everyone...

Kappy:
Thanks for the reply. I looked at the plist, but the -v was not there. Here is a copy of the plist:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Kernel Flags</key>
<string></string>
</dict>
</plist>
At least I know what it is called now - a "verbose startup".
Again, thanks for the help. Learn something new every day.

My Mac mini starts up with a black screen and white writing.

Okay basically I purchased a Mac mini (Intel Core 2 Duo 1.8GHZ 1GB RAM model) in Feburay 2008, and in June 2008 i decieded to bring it to a store to get it upgraded to 2GB. At the store the guys told me my Mac mini wouldnt accept 2GB, they reckon it was 'cause of the logic board. So they put a new one in and was able to succesfully install 2GB.
Since that day my Mac mini stopped starting up with the apple logo. Now it starts up with the white/greyish background without the apple logo, then goes to a black screen and just runs pass loads of white text then its ready to use with no problems. It does this all the time.
I've read a little about the Kernal Panic and looked at pictures of it, but what I have doesn't look like the kernal panic pictures i'm seeing.
So i am writing this pose to find out whats wrong with my Mac mini, can anyone help me?
Oh, I nearly forgot. When i turn the Mac mini off it does the same black screen with white text stuff before fully shutting down.

Restart the computer with the Option, Command, P, and R keys held down, and release them when you hear the second startup chime; this clears a setting which causes it to start up into verbose mode each time.
(35613)

Black screen with white writing on boot - then nothing...

Ok, this is a long story, but here's the abridged version;
I have a mac mini - the old PPC version. It has just come back from being repaired - replacement logic board. However, repaired it is not. Every time i try to start it up, I get a brief white screen with grey apple logo as normal, and then a black screen with white writing on. The writing is exactly the same text as you can see in the console system log. It gets about a page-full through this, and then goes completely black. No video at all.
However, the machine is still working in there - I know this because I'm typing on it now via VNC. It is perfectly happy and all. It just does this weirdness start up and then no video.
My question is twofold:
1. The company that repaired it claims that it booted fine before they gave it back to me; however, it hasn't since I've had it back. Could the boot behaviour be some kind of diagnostic thing they left on my machine, or a mode they left it in. If so, how do I get rid of it?
2. Failing this, does it sound like my vidoe card packed up maybe?
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Have you
tried to simply do a clean install of Mac OS X and
your other software? I normally find that this fixes
90%+ of all unexplained software related issues.
I could, but (a) I'm not convinced it's not related to the replacement logic board and thus a hardware issue, and (b) I can't see to do a clean install because it has no video signal

Have 2004 eMac...screen goes black without notice. Getting a reconditioned 2005 eMac. Can I have the HD swapped from old eMac to reconditioned one without problems??? Black screen is called "collapse to black" and occurs 4-5 daily

Have 2004 eMac...screen goes black without notice. Black screen is called "collapse to black" and occurs 4-5 daily. From what I understand, this is due to bad capicators????? Found a reconditioned 2005 eMac on line. Can I have the HD swapped from old eMac to reconditioned eMac without problems???...with regards to software applications. Old eMac is running 10.4.11 and reconditioned on runs 10.5. Suggestions, tips would be greatly appreciated. Thank you.

Might want to make sure both units are not affected. This is the range of serial number from the now-defunct Apple Repair Extention Program for USB 2.0 eMacs:
G8412xxxxxx- G8520xxxxxx
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A "collapse" is more indicative of a video cabling issue, but the bad caps produced such a wide range of problems that it's hard to sort through them.
If the old eMac is a USB 2.0, which a 2004 unit should be, the HD should exchange with the new one. As the last of the eMacs shipped with Tiger, the new computer should have no probelms with a 10.4 boot volume on the old drive. You can upgrade to Leopard one you have hte new disk in place.
NOTE: Takeapart and reassembly on the USB 2.0 must be done "just so" or you can permanently damage the power switch. Instructions for the USB 1.1 takeapart are slightly different , and the power swtich damage is usually caused by people using the older instructions on a newer eMac.
If you are not up to the takepart nor can you find a local computer tech who knows these. consider taking the drive out of the dead computer(won't make much difference if you damage that one as it's dead), buy an external Firewire enclosure, and put the old drive on it and use it to move data to the new computer. Then you can leave the external attached as a backup drive.
Is the new one a 1.42Ghz model? They have been practically trouble-free around here. We have one and it's been rock solid since we bought it as a refurb in Jan 2006. The 1.42G has the advantage of a Core Image-enabled video chipset, the ATI 9600.
And all USB 2.0 eMacs can, with modern memory modules, support up to 2G of RAM.

Screen goes white??? intermittently

I apologize in advance if this discussion has already been answered for someone else but I am new to the Mac world from the land of perpetual viruses. I recently bought a 17"MacBook Pro because I hate to under buy anything. The first one out of the box had a completely dead screen, returned it. This one is better but occasionally the screen goes white? Sometimes it recovers on its own or needs a reboot. The last time it happened it would give me white band vertically down the middle where the apple bootup icon normally resides. I am a bit concerned that after the first dead screen that I may have made a mistake going with this computer. I did just update the software today to the latest version..... any ideas on whether this will fix it or has somebody had this happen to them as well. Any help would be deeply appreciated before warranty runs out....And would the public opinion be to spend the $349 for Apple Care?

> white band vertically down the middle
Call Apple while still under warranty and get this fixed, or a replacement.
> And would the public opinion be to spend the $349 for Apple Care?
You can purchase this any time up to 364 days from the original date, my advice would be it's well worth it and it will save you money in the long run.

Screen goes white every time it is moved, what is causing it?

Everytime i move the screen on my 13.3" macbook the screen goes white and i have to move it to get it to display anything again, i would like to know what is causing it and how to resolve the problem.

I believe that system has a hall sensor on it to detect when the lid is closed so it can put the system to sleep and/or disable the monitor so it can be used with an external monitor only. If the sensor is marginal or has a bad cable, it may intermittently cut the monitor on and off, and may likewise put the system to sleep. One way to check would be to plug in an external monitor and if the laptop's screen cuts off or doesn't show up, start using the trackpad and press on a non-typing key like the shift key. If the external display suddenly pops and becomes active while the laptop display remains black, it's probably a problem with the sensor or the cable/connection. You might be able to fool the sensor into kicking on and off by moving a magnet over it. It's located on the left had side of the base with the unit opened up, and right over the audio output plug.
I know of some people that put a small magnet right over the hall sensor's location so the laptop display turns off and they use the system with an external monitor, keyboard, and mouse. If fooling with magnets, make sure they're small and don't get them close to the hard drive because a strong magnet can wipe them out.
I don't know if this will help you much, but it might.

Ipad 4 frozen during update ios 8.1.3. - did anybody know how to restart (or reset) my ipad4 from black screen with white apple logo?

ipad 4 frozen during update ios 8.1.3. - did anybody know how to restart (or reset) my ipad4 from black screen with white apple logo?

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Vertical lines on LCD - Black screen, goes white, fades to black again.

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