HT1199 IMAC with purple pixels scattered across the screen at start up

This happens intermittently when I start up the IMAC. Re booting the IMAC is becoming more frequent, and performance is slowing. The latest has been the blue tooth mouce can't be found at start up, so it is taking a couple of reboots to get that far.
The IMAC is coming up for 18 months old. So I was wondering if this was a hardware issue, or a software issue.
The symptom occurs regardless of which user logs in.
I'm not sure how to test the system to see if memory or other is an issue. Or I just need to get a tech to look at it.

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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Satellite P10: white and purple clouds fading across the screen when booting

I had been having problems with my SP-10 laptop so I bought a new hard drive (Fujitsu 60GB instead of standard 40GB) and fitted it myself. I was working fine with this for a long time until suddenly I had the strangest problem I have ever seen on a computer...
Sometimes, when booting the laptop, instead of the normal red "TOSHIBA" screen and the Windows XP startup message, the laptop simply shows some weird white and purple clouds fading across the screen, eventually fading to a very dark but not quite black screen.
I thought to begin with it was a problem with the DVD drive, as when it finally gave in and booted normally, the DVD drive was disabled. However, I have noticed in the BIOS, under "Advanced" that the InfraRed Port shows intermittently - it shows with the [Disabled] setting next to it, but will then disappear from the listing, then reappear again, and then go again and so on.
Sometimes my computer will be operating normally, then completely lock up (mouse and all) and will reboot with the clouds!
I have looked in the Windows Event Viewer for when the notebook has locked up and have seen something to do with an IRQ problem for the Infrared Port. I disabled the InfraRed port in Device Manager (I managed to enable it in the BIOS by loading standard BIOS settings) and restarted, but it started up with the clouds again, so I have a feeling the InfraRed port is the culprit - perhaps faulty hardware/loose connection as it is located quite close to the DVD drive and HD drive.
I was just wondering if anyone has ever seen anything like this before on ANY computer, and if they knew how to resolve it? It seems completely illogical that a faulty IR port could alter what is displayed on the screen at bootup, unless of course there is something wrong with the boot sector of my HD?
Any ideas?
Thanks.
Tom

Well I can assure you my laptop has an InfraRed Port on it - I used to use it with my mobile phone for various things but don't bother now.
Good idea about attaching another monitor - hadn't thought of that. I will see what I can come up with.
I simply don't understand how anything except the display driver could be causing this, unless of course, another piece of hardware is conflicting with the display driver. But then why would it be intermittent and not constant? Anyway, I don't seem to have had the problem since I disabled the IR port (except the first time I disabled it) so here's hoping it's fixed.
Will definitely try attaching another display though. Good thinking.
Thanks,
Tom

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The display screen on my Ipad is coming up all blurred with blue background mixed with pink and purple lines. It's difficult to see icons but apps are still accessible. Colors are off and images are very unclear on apps and home screen.
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Thanks.

First thing to try is to reset your device. Press and hold the Home and Sleep buttons simultaneously ignoring the red slider should one appear until the Apple logo appears. Let go of the buttons and let the device restart. See if that fixes your problem.
But it could also be a hardware failure. Make an appointment at an Apple Store to have your device examined by a technician. Or contact Apple Support.

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Contact Apple's Support, formerly Apple Express Lane.

Has anyone else has seen this problem with their iPod touch 5th Generation with iOS 7.0.4. My screen started making flashing white lines across the screen, then went dim, then pixeled with purples

The ipod will show flashing white lines across the screen, going down, it then does somthing where the screen will dim down but its not like when the backlight goes on and its about to lock. It dims the background of your ipod and the icons and letters kind of all look defined. Then the ipod gets all pixelized and it has big boxes on pixels and its all differnt colors like purples and greens, red, etc. then it turns right off and restarts itself less than 5 seconds later. These things happen really fast but when it does it's really weird. It first happened 3 times in a row, Its still continuing to happen but i can manually turn off my ipod by holding the lock button down and not even 30 seconds later it's like its possessed and it turns on by itself. I talked to somone on appel and they told me to back it up and restore it. I restored it and as soon as the process ended and tuirned on like a brand new ipod and like clockwork the glitch happened instantly. It did it a couple of times throughout the night and i kept having to watch it so i can keep turning it off manually because it continues to turn on by itself. I talked to 3 different people on Apple Support and they couldnt even find an answer for me. It's so weird.

Try:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- Try another cable
- Try on another computer
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar
Also,
If you restored to factory settings/new iPod via iTunes (Not via Settings>General>Reset>Erase all Content and Setting) and still have the problem that indicates a hardware problem.
Make an appointment at the Genius Bar of an Apple store..
Apple Retail Store - Genius Bar

Issues with lines across the screen, as well as freezing

Issues with lines across the screen, as well as freezing
Hello all
Got an iMac since January 2008 and I do like it a lot, even though it has some issues:
-- It displays (quite often) lines partially across the screen
-- Lines appear as well when opening applications or when menus come up
-- The system freezes more than I like to admit (more than my Windows/Ubuntu box)
I don't know if the freezing has to do with the lines that are shown on my screen. But I assume that both issues relate to some video card problem. I can't be sure - but that's what I assume from living with this issue day to day.
The line on the desktop (most of the time it is there before login) I can always get rid of by changing the display resolution to something else and then changing it back. Normally the line is gone, or, reappears on a different spot on the desktop. But repeating the procedure removes the line.
However, this does not mean that the lines are not showing up again when launching apps or displaying menus!
And since those lines appear to happen randomly, I think it's safe to assume that we're not talking dead pixels here, either...
About the freezing:
My iMac freezes sometimes when I move the mouse around, when switching desktops using "spaces" or when the zoom function of the Dock kicks in. Sometimes the screen goes completely black, sometimes completely white. The mouse, however, always works. But the system requires a reboot.
Again, this happens too often to feel comfy about it.
With my little knowledge of Mac troubleshooting I assume that there's something wrong with the ATI card that's built into my Mac. On the other hand, some people say that they started getting similar issues after updating their OS to Leopard. Again other people say that such issues stem from an ATI revision that is too old and the Mac should get a new ATI card. And how would that work? Isn't that an "all-in-one" machine with everything soldered onto the mainboard?
So, any help in this matter is greatly appreciated...
Cheers,
Rainer

Here are a few screen photos I've taken (not screenshots, as the lines are not visible when taking screenshots. I used my digicam to snap those...).
Here's the link to those screen photos displaying some of the many lines I keep having:
http://picasaweb.google.com/rainer.rohde/NewAlbum62508115AM
Needless to say, as I typed this message here, I had a nice line going across my Safari window..
Cheers,
Rainer

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It may (likely) be a video card issue. There is a "known issue" with certain iMacs made in a certain timeframe (2011-12 I think), and one of the telltale symptoms is vertical lines showing up on your display. Go to Apple's website (https://getsupport.apple.com/) to find out how to get support, then either call their service line (they usually pick right up) or take it into your nearest store's Genius Bar. They'll first check if your iMac's serial number is on the list of vulnerable machines, and then they'll have to do a diagnostic to prove that's the problem -- if your serial number's on the list and it fails the diagnostic, they'll replace the video card for free, even if you're not covered by AppleCare (and if you are, it's free regardless).
My iMac just had this problem, there were lines sometimes and just weird display issues other times. Eventually it just grayed out altogether and I couldn't use it. So it's likely your display problems will worsen if you don't get it looked at.
It took them about a week to ship the new video card over, install it, and return the iMac to me.
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HT1199 IMAC with purple pixels scattered across the screen at start up

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