Yellow(blue line) on my iMac MC309 21,5 inch

I have used my iMac for half a year only and got a yellow, blue (depending on the background) line on the left. I tried almost everything, rebooting, turning off, resetting PRAM and NVRAM and nothing helped. What should I do? Is it a serious problem?

Contact Apple Service, iMac Service or Apple's Express Lane. Do note that if you have AppleCare's protection plan and you're within 50 miles (80 KM) of an Apple repair station, you're eligible for onsite repair since yours is a desktop machine.

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Vertical thin pink and blue lines on my iMac screen

20 inch iMac 2009 model I think 2.66GHz 4GB RAM 500GB HD.
First the screen went all blocky so I turned off the iMac via the button at the back. When I switched it back on I was created with loads of pink vertical lines then a grey screen.
After a while of resetting the PRAM and SMC and safe mode. Still nothing. I have managed to get it back to the Mac OS X desktop but now I have light blue and pink thin vertical lines with larger white vertical lines in-between.
Is this a RAM issue? Graphics issue or logic board? or just old age 7 years old there about?
Any help would be good?

Seems like others have seen this …
my imac27" freeze showing some pink lines and after this some dots...help!!!!
Early 2009 24" iMac - Startup Problem
I think it may be a GPU issue, I'm not sure how you can resolve this considering the age & the difficulty to get official Apple parts. You could ask an Apple store what the service cost is likey to be. I believe they will give you an estimation if they can inspect it. I would try to rule out the current installed OS by booting into recovery mode - if that also has the issue it seems like it would be the hardware itself.
You can also try a safe boot - that should also rule out third party software (but that seems unlikely to me).
OS X: What is Safe Boot, Safe Mode? - Apple Support

A very strange behaving blue line on screen

Yesterday I noticed a new blue line on my iMac display before I went to sleep. Today it is still there. It is a bright blue line that appears on the right side of my screen, is vertical, and goes a third of the way up from the bottom of the scrreen.
Running OS Lion.
When I put a program in full screen mode the line turns to a faint yellow.
When I watch a movie in iTunes the line is still there.
When I open Pages and move various parts of the docoment or the inspector windows over the line it changes color to a faint yellow. In the gray portion of the box I cannot see the line. I can't tell if the the line, a faint yellow, is there or not.
Now here is the WEIRD part. I cannot take a screenshot of it. When I do the line is gone, it is not present in the image. It is present in all other instances... but I cannot seem to take a picture of it.
If I open up QuickTime and make a recording of the screen... it is NOT there.
What gives? I've looked through other discussion forums and find a lot of ranting. The inconsistency of the line leads me to believe that it isn't strictly hardware. But what do I know.

I suggest that you try to run a software reinstall using SUS.
http://www.sonymobile.com/gb/tools/update-service/
If the problem still remains you should contact your local support team, to have the phone examined and fixed at an repair center.
http://www.sonymobile.com/global-en/support/contact-us/contact-info/
- Community Manager Sony Xperia Support Forum
If you're new to our forums make sure that you have read our Discussion guidelines.
If you want to get in touch with the local support team for your country please visit our contact page.

I have blue and green vertical lines on my iMac which is no longer covered by Applecare. Is it fixable?

I have blue and green vertical lines on my iMac which is no longer covered by Applecare. Is it fixable?

What model iMac? Could be a failing video card but maybe not. Is it that way on every screen, startup to shutdown, any time the screen is lit?
Do you have an AASP nearby? Time to have an estimate made. Fixing it will likely be very expensive.

Blue lines down imac screen

I have an iMac4,1 with an Intel Core Duo processor, and on the right side of my screen I developed a blue line running from the top to bottom of my monitor. A couple months later, another line appeared right next to it. Does this mean my iMac is crashing? Can this be easily fixed?

The iMac 4,1 was made from Jan 2006 to Sep 2006 so it is five years old. At that age it's possible that a problem is developing in the on-board graphics card. The fact that it's an iMac means (1) it isn't easy to take it apart and (2) the graphics card isn't removable, it's part of the main circuit board. It may not be practical to fix it. Run the Apple Hardware Test as Carolyn suggested. Maybe it will find something less catastrophic that can be repaired inexpensively.

2009 iMac Blue lines and crashing - Apple replaced graphics card but same problem occurs? Any advice?

Hi all,
So Ive had my iMac 2009 model for a fair few years, and barring getting the hard drive replaced a while part as part of their program, no troubles. Then a month or less ago, I got this weird crash during work. Small cubes of vertical blue lines appeared all over the display and froze everything. The arrow cursor still moved but had to hard reset. Then it would just constantly freeze and the blue cubes appeared again on startup so I could only get in using Safe Mode.
After browsing the web, I heard a backup restore might fix it, which it seemed to, but then it kicked in again. Took it to Apple who could see no hardware issues and the problem didnt occur while I was there because of the restore, it was more intermittent. So I took it home and it happened again.
This time at the Apple Store, they told me it was definitely the graphics card and took it in for repair. Service was great and a few days later I get it back, pay for the repair and come home. All fine and no problem for a couple weeks.
Yesterday it kicks in again! Same problem, cant boot at all outside of Safe Mode, which is erratic, has 5 columns of blue lines across the screen and Mail flickers like ****.
Ive booked it in AGAIN at my local store to check, but my question is does anyone have experience of what this could be, and also if the first repair was wrongly diagnosed and didnt fix the problem, will Apple refund that, or offset it against the actual repair if something else needs replacing?
Any help or insight would be greatly appreciated, all the best!
Leo

new card or not, I guess only Apple themselve will know, but Apple Authorised Service Centre can only replace with original card. you may consider to get your fan replaced too, as your iMac is getting old now and the fan might be getting weak to cool your system down.
well, this is only a suggestion. I've been an IT technician for years, and I do encountered graphic card keeps failing till we changed the fan, just sharing my experience.

IMac 21.5" boots to white screen with vertical blue lines/bars then locks up

iMac 21.5" (mid 2010) Intel Core i3 4GB RAM with Radeon HD 4670 boots to white screen with vertical blue lines/bars:
Then it locks up after a few minutes, at which point the screen changes to white with these blue symbol things all over the screen:
If boot to Safe Mode, it still has the white screen with blue lines/bars, but eventually loads the login screen and I can successfully login and get to the desktop, but even that has the bars/lines.
Eventually, after enough restarts or hard shutdowns it will boot normally with no video/display issues. I've run disk checks, did the SMC and PRAM resets, checked logs (that I know of), and have even taken it completely apart, cleaned it out, reseated everything, put it all back together, but no change. I've read a few other posts about similar issues (but not quite the same video issue as this) where people had the logic boars replaced or reinstalled OSX, but that didn't always fix it. Any ideas? Has anyone seen this issue before? Thank you.

crw4096 wrote:
Is this a dead disk?
Very well could be.
If you can not startup from the Hardware Test, in Safe Mode or from > OS X Recovery as discribed in the Support article's.
Dig out the original Install Disc set that came with the iMac and do one of the following.
1. Attempt to Repair the Hard Drive.
Start from your Mac OS X Install disc: Insert the installation disc, then restart the computer while holding the C key.
When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
Click the First Aid tab.
Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
Select your Mac OS X volume.
Click Repair. Disk Utility checks and repairs the disk.
2. Run the Hardware Test from the second Install Disc.
1. Insert Disc 2 and Startup holding the D key.
2. Select the Extended Hardware Test.
Then if you still can not get anything going, you need to contact your Local Apple Store or AASP and make a Service appointment.
see > Apple - Find Locations

Macbook 6.1 (2010) blue/yellow vertical lines and a black ink-link blob.

I have a macbook 6.1 (2010) which I noticed a few small vertical blue lines on the screen-I turned it off but today the lines had gotten much bigger and now there's a black blob on the top. My macbook is out of warrenty and there's no Apple Store where I live to bring it in and have it looked at. I've read about people having their screen replaced for free by Apple who have had similar problems. I've never dropped it and always keep it in a heavy padded case but last year I got a new hard drive installed and don't know if this will affect my chances of Apple helping me.
Has anyone had this problem?
I'd really appreciate any advice on the topic!
Thanks.

Hi...
Perhaps not so much a problem with the display but possibly the grahpics card.
Run the Apple Hardware Test

Updated to Premiere CC 2014 and AE CC 2014 and now have blue lines/blue imprints of windows and crashes after 5 minutes of use or on start up

iMac - 27 ", late 2012
Processor 3.4 GHz Intel Core i7
Memory 32 GB 1600 MHz DDR3
Graphics NVIDIA GeForce GTX 680MX 2048 MB
Software OS X 10.9.4 (13E28)
After I updated from CS6 to CC 2014, my screen started to display blue lines and/or a blue imprint of a previously closed window, and Premiere CC 2014 and AE CC 2014 began crashing after about five minutes of use. Also, an error message popped up telling me to update my CUDA driver. I took the iMac into Apple and after updating the CUDA driver in store with an Apple associate, the error message went away. They were concerned about the blue lines, and after 3 days of hardware testing, they determined that the screen was not failing, the hardware was in great shape and the lines and crashing must be a software related issue. I took the computer home, uninstalled and reinstalled AE using the appropriate installer, and rebooted. Then I uninstalled and reinstalled Premiere using the Premiere installer and rebooted again. During the second restart a blue imprint of the Google Chrome window I had had open before the reboot was imprinted over the welcome/password screen. I typed in my password, opened up the Premiere project I'd been working on and immediately, the always dramatic message "A serious issue as occurred..." popped up. I tried opening it again, saved a new recovery copy and started to work on the project. Five minute later it froze up and I had to force quit. This happened two more times, both roughly after five minutes of use....back to square one.
Obviously, this is seriously hurting my workflow. Any advice you could give would be greatly appreciated!

... a blue imprint of the Google Chrome window I had had open before the reboot was imprinted over the welcome/password screen.
The apple guys said this wasn't a hardware error? I don't know software errors to save imprints throughout a restart. If I were to live dangerously and assume anything it would be that you got a failing graphics processor.
Ever tried cloning your boot drive and then doing a complete wipe and re-install of OS and CC?

Why do I have a thin blue line running down the screen?

There is a thin blue line running vertically down my imac screen a little to the right of the centre. It disappeared for a while - i think after I tapped a certain key - but then re-appeared and will not go away. What is it? How do I get rid of it? Mark

Sounds like a problem with the display. Contact your local Apple Store or AASP and make an appointment to have the display looked at. > Apple - Support - iMac - Service FAQ

The Thin Blue Line? :-)

My sons 17" iMac has developed a problem, in that two thin blue lines have appeared from top to bottom on one side of the screen. has anyone else had this problem and is it D.I.Y curable or is it an Apple Repair job? Thanks in advance

Thanks for the update. The Intel iMac forums are here:
http://discussions.apple.com/category.jspa?categoryID=189
The Intel machines' hardware is so different from the G4 iMacs that blue lines could be due to a completely different reason.
We've all complained about how this forum is labeled. After all, all iMac variants since the first one are "flat-panel iMacs" in spite of very different processor type and technologies. Most of the posts here are in the wrong place--not your fault!

Permanent vertical blue line the screen and a red one has just popped up too. What does it mean and how can I get rid of them?

I have had a permanent vertical blue line on the right side of my imac screen for some time now. It does not affect the use of the computer. A red one has popped up on the right side of the screen and is not going away either.
Would you know why these are appearing and perhaps how to get rid of them please?
Thank you in advance

Best guess is that either your GPU or LCD is failing. You should take it to the nearest Apple Store or AASP for proper diagnostic. Once you know what the problem is you can decide wether or not it's worth repairing.

Light blue lines all over the screen & if I need to buy new...?

I am taking my Powerbook G4 to our Mac store on Monday. I use it with a Viewsonic monitor, and yesterday, there were suddenly faint offset blue lines on the whole screen. You can really see it where it used to be white. So set up the monitor to a different computer and it was fine. It is the computer. Maybe the screen? Or maybe a graphics chip? I really don't know how that works.
Any ideas what it might be?
My second question would be. This laptop is 4-1/2 years old. I use it all day long as I sell on ebay and etsy. The main things that I do are email, photo editing, and some games that I download from Bigfish, such as Ravenhurst.
Would I be good going with a Mac Mini since I already have a monitor and just bought a new keyboard about a week ago? Or the smaller Imac. I am on very limited space and even the smaller Imac will crowd my cubbie area a bit, it would not fit under my lowest shelf.
Thank you for any help you can offer.

My current Powerbook is Processor 1.67 GHz
Memory 1GB DDR2 SDRAM

Why is there a blue line through my moniter after installing os x snow leopard?

why is there a blue line through my moniter after installing os x snow leopard?

I have a imac 2.4 ghz intel core 2 duo 1gb 667 mhz ddr2 sdram

Blue Line Onscreen?

I've got quite an old iMac and on-screen I've had this blue line for awhile. There hasnt been any other lines since it appeared about a year(?) ago. Just wondering if there's any way to remove it. It also disappears when I screenshot and when I'm on something with a white background.

It means that the display is damaged. You have three options:
1. Keep your iMac as it is now and keep the blue line on the screen.
2. Get an external display and use it instead of the iMac's display.
3. Take the iMac to an Apple Store or reseller to get the display replaced

Yellow(blue line) on my iMac MC309 21,5 inch

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