IMac :: Won't Fix Freeze Screen / Showing Noise Pixels
Dec 12, 2009
I recently got the Core i5 iMac. Basically, while I'm working doing everyday things like browsing, coding, iMovie etc...my screen just freezes and there are squares of white noise pixels scattered everywhere. I can see the mouse cursor as I move but the image is so distorted that I dont know what Im clicking. Restarting the machine fixes the problem.
I made a youtube video so you guys could see what I'm talking about here:
http://www.youtube.com/watch?v=sVHCn9VSyIA
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Feb 13, 2010
for the last week or so my MBA has been showing a ~3 inch bar running vertically along the middle-left of the display. Until today, the area looked just like blurry pixels (some things like graphics would still appear, so I don't believe the problem is with the pixels themselves). Now the area has become a gray bar of pixels.
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Jun 10, 2012
So I have a 2009 iMac.Earlier this year, I upgraded to Lion. A little while after this upgrade I started running in to an issue that is now making my computer unusable. When working on graphic or labor intensive activities I am receiving Red Green and Blue pixels around my screen (see picture below) Shortly after this happens, my screen freezes and becomes unresponsive with these pixels still up OR it will completely glitch out, blinking and causing the whole screen to go crazy. Things I have tried so far, rebooting my system from scratch, replacing video card (not cheap )
Info:
iMac, Mac OS X (10.7.3), Late 2009
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Apr 29, 2009
Yesterday I started my iMac G5 and after about 15 minutes, it froze. It's happened before but I can always move the mouse. This is the first time it has actually properly froze. After about 2 minutes, I got a very loud whirring noise. I left it for about 5 minutes and it didn't die down. It has now been left for about 24 hours with the occasional turn on to see if it's fixed. No joy. Now it won't even turn on.
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Jul 30, 2010
1. When closing the lid or pressing the power button the computer freezes, the fans start spinning fast it stays like that until it drains the battery. This happens every time.
2. Start-up times are very long, like 3 or 4 minutes. This also happens every time.
3. Now after a fresh snow leopard install it doesn't even start up completely, as it stays showing a light blue background and I can hear the music of the introductory animation.
4. Also, the keyboard is unresponsive at the login screen, but the mouse cursor moves and the display goes to sleep normally. Clicking anywhere with the mouse also produces no effect.
5. It seems to work OK in safe mode.
The macbook worked ok with the factory installed Tiger. The SL DVD is OK, as its installation has been tested on another Mac. The machine's advanced hardware test passed successfully. Resetting Pram and SMC did not solve the problem.
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Sep 16, 2010
Today, my mac freaked out on me twice. I was watching something via Quicktime and all of the sudden the screen went black and green and started going crazy like it was twitching or something. And I got this loud noise coming out of my speakers. My MacBook is about 3-4 years old.
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Sep 21, 2006
I have a few stuck pixels on my screen which i know is inevitable, but I've heard these can be fixed with flashing programs. I came across this and was wondering if anyone has had any success or has any insight on this.
[URL] is the link to the pixel flasher thing. I already tried the pressure technique found here [URL]...an-LCD-Monitor but it didn't work, unless I didn't do it right. I didn't want to press too hard.
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Jun 4, 2009
I use an Intel white iMac 2.0gHz as my primary computer. So far, it has given me no trouble. However, lately I woke the computer to discover a yellow line of dead pixels all the way to the right of the screen. It was discouraging but since the line was out of the way, it wasn't a great deal. However again, later today, I woke the display to find another line running down the middle of the computer. Oh gosh! Anyone know what is going on? Is it the display or the graphics card?
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Nov 20, 2008
I just bought an iMac G5 off ebay and today I tried to use the Tiger install dvd because the previous owner had deleted software like textedit, etc.
Anyway, I put the disc in and clicked on Install Mac OS X, then clicking restart. once the iMac shuts down and begins to restart, as it is on the grey screen you can hear the disc being read, then as the background goes a different shade of grey and the Apple logo appears, a minute or so passes and then the iMac begins making a lot of noise. I went away for 10 minutes, came back and it was still doing the same thing.
So I'm basically looking for help because I really want to erase and reinstall everything.
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Mar 13, 2009
My new 24" 2.93 1tb iMac arrived today after ordering it March 3rd. Everything is great about it except for a cluster (like 8-10) of dead pixels in the upper right of the screen. This bugs me, so I want to the it replaced. My question is how does Apple go about replacing computers? Do I get a new one first then send back the old, so I am not with out a computer for a week?Also do I send everything back with all the accessories or just the physical computer?
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Mar 12, 2009
i noticed a faint vertical line of pixels on the far left of my screen. they weren't black or colored, just faint/dim. i tried switching my desktop background, and the line was still there. i restarted my computer, and the line was still there. i shut down the computer, thinking that i would find the line there in the morning and have to take it to the apple store.
when i turned the computer on the next morning, there was no line. however, later that evening i noticed a reappearance of the line. i restarted the computer and left for a while. when i came back later, i woke the computer from sleep mode, and the line was gone.
there was no line on the computer this morning, although after a couple hours of use, i noticed that two lines had developed on the edge of where i had application windows open -- in this case, both yahoo messenger for mac. curiously, this didn't happen with other windows (finder, safari, etc).
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Jun 17, 2010
I've got two iMacs in my posession currently from getting replacement machines. Both have screen issues as follows: iMac A - dead & stuck pixels, feint grey horizontal bar running along bottom portion of screen, bottom left corner has noticeable backlight bleed. iMac B - dead & stuck pixels, yellow tinge in bottom portion of screen. So here are my questions. Which iMac should I keep and submit for repair? (does it matter and why or why not?) How does the actual repair get done? For example, if I submit iMac B for repair, could I end up with a grey bar or backlight prob like in iMac A?
Are there multiple layers to the display when they fix specific issues? For example, let's say the dead pixels are on one layer while the yellow tinge is on a different layer, or are both issues on the same layer? I ask because if there are two or more separate layers, there is more of a chance to mess up so I may want to submit the iMac that has the least amount of issues.
Lastly and most importantly, has anyone submitted their iMac for screen repair for these issues and got it back 100% repaired? (no dead/stuck pixels, yellowing, grey bar, backlght bleed) These are #4 and #5 in terms of the number of replacements I've gotten now and I'm sick of it so I may opt to go for repair on either of these existing machines instead of going for replacement #6. But do you think a 6th replacement would be better than going for repair on either of these? Or not?
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May 9, 2010
I have this problem 2 days now , When i busy just doing stuff on my mac in a while this is what happens a lot of strange weird looking things come in my screen Here is a example of what i mean -> Here and Here What are all those weird things on my screen? And look at my finder it's going crazy and it's driving me crazy what is it some kind of virus or do i need to reinstall the thing xD I already tired repair disk from the MAC CD and it said no problems
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Sep 26, 2010
Over the last week, my 7 year old Powerbook G4 began showing faint pixels in the background which is more obvious if you are scrolling over menus also when a menu is highlighted. Unfortunately this seems to be affecting DVD playback because it will show blinking green vertical lines inside Front Row. This image within OS X 10.5.8 will show what I mean: [URL]. Does this means the graphics card is failing?
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Aug 23, 2014
A moment ago the 3rd retina display of my MacBook (and only a month after replacement) the display showed dead pixels again.
Info:
MacBook Pro with Retina display, OS X Mountain Lion (10.8.2), None
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Feb 18, 2010
a few weeks back i tried to change my wallpaper and System preferences just hangs and Crashes and i get this error report:
Process: System Preferences [322]
Path: /Applications/System Preferences.app/Contents/MacOS/System Preferences
Identifier: com.apple.systempreferences
Version: 7.0 (7.0)
Build Info: SystemPrefsApp-1750100~6
Code Type: X86-64 (Native)
Parent Process: launchd [205]
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Oct 24, 2009
I just bought and received a new 21.5'' iMac and love it but the screen is making a high pitched noise, similar to a dog whistle. It's that sound that isn't loud but pierces through your brain. And the brighter the backlight is, the louder is gets. I love this machine but I don't think it should be doing this and it bothers the heck out of me. I called Apple and all they said was to bring it to the Genius Bar.
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Jun 1, 2010
I'm wondering how uniform the backlighting is on everyone's mid-2010 MBPs. The screen on mine is sort of a gradient, with the screen becoming progressively brighter towards the left side. There are also what appear to be columns where the screen is slightly darker than the surrounding area. This makes it annoying to read in low-light conditions because the left side of the screen will be at a comfortable level when the right side is slightly too dim, or the other extreme. I absolutely cannot stand dead/hot pixels though which makes me hesitant to have the screen replaced. I just bought the notebook a week ago but I don't want it replaced, as I installed a Moshi PalmGuard before I noticed the screen issues. I also installed an InvisibleShield but I can have that replaced at no cost.
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Jul 3, 2009
My Mum has just turned on our family computer- an iMac G5, 1.9ghz 17" (first model with built in iSight).
It gets to the grey screen with the apple, with the loading icon below it, then after about a minute the fans turn out pretty loudly, and it goes no further, just stays on the grey screen.
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Jun 6, 2009
On my 13" MacBook Pro, the hinge makes a cracking noise on the right side of the computer (near the power button) when the screen is positioned all the way back.The entire hinge also makes a loud popping noise when I adjust the screen position. The screen seems very tight, and it takes a little bit of effort to move the screen, and when the screen is moved it makes the loud popping noise.
This is probably going to make some of you guys cringe, but sometimes putting pressure down on the top of the case close to where the black hinge meets to unibody enclosure seems to stop the popping noises. Putting downwards pressure on the hinge, or flipping the computer over and putting pressure on it that way, also seems to alter how much popping noise there is.
If I mess around a bit with applying pressure on different parts of the computer around the hinge, I can usually eliminate the noise. But, the cracking noise when I put the screen all the way back is still there.Any ideas what to do? It's not interfering with the operation of the computer, it's just incredibly annoying and this is only a four month old machine which shouldn't be creaking and cracking already.
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Oct 13, 2009
Very occasionally the screen on my iMac (early 08 24") goes blank and it makes an incredibly loud static sound that's independent of the volume control setting. The power then needs disconnecting to restart the machine. Haven't been able to tie it to any specific program. Apple Care asked I leave it on logged in on a new user account (at the time I originally thought it only happened in sleep mode, but have since discovered this is not the case).
It's happened maybe 3 or 4 times in the same number of months. I've only found one similar case on the net, with someone suggesting it was Safari 4 beta, which I've found not to be the case with mine. It's on extended warranty. I think there's something seriously wrong with it (it's already had the hard drive and power supply replaced).
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Sep 4, 2014
My mid-2014 15" Macbook Pro randomly "loses" its retina display at the top menu (becomes pixel-y), where the battery, sound, and wifi logos are (on the top right side of the screen). A restart fixes the issue, but I want to know if this is an issue that can be fixed?
Info:
MacBook Pro with Retina display
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May 14, 2010
So after waiting 4 weeks my High-res Glossy MBP FINALLY arrived...I was so happy. Got home switched it on and WOW it really is a beautiful machine...After using it for about 30 mins however i noticed a small dot to the lower right half of the screen... I looked closer and realized it was either a dead or stuck pixel( I dont exactly know the difference). I did a few test on it, and its ONLY visible when a light color is on the screen (White, Gray etc) However when the screen is DARK blue, Dark green or black it cant be seen at all...
It kind of looks like a TINY speck of water or liquid the size of 1 pixel stuck under the glass... I noticed that it does get lighter and darker when i adjust the brightness of the screen. Can anybody give me some tips? Anything i can do to fix it? Is it in fact a dead or a stuck pixel? I tried the JSscreen fix which is basically a online tool that opens up a flashing screen...Ive had it on for about 30 mins...but no luck
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Aug 19, 2008
I'm new to this forum and I just bought a new iMac 20" 2.66GHz, I turned on my computer and noticed a weird sound (buzzing or humming noise) not loud but loud enough to here I notice when I messed with the Brightness it went away is there something wrong with that or is that a known issue?
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Aug 16, 2010
I received my new 27" i7 1TB HD on Friday. I was amazed at how fast the shipping was. I'm in the UK and I was told it would be shipped from China and arrive in a week and a half, but instead it turned up from Ireland the very next day! After unboxing it I ran all the tests.. yes, call me a sceptic and tell me I'm looking for trouble! No yellow screen, no grey shadow, no scratches on cds, no dead pixels on photo booth. So far so good. I could swear my Superdrive is making an odd off-key noise when accepting discs, but second opinions tell me it's normal. The Seagate drive can make 'processing' noises every now and then but it doesn't bother me too much. I think in Europe we're stuck with Seagate for 1TB from what I've read here
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Feb 25, 2012
my Macbook Pro's display has been acting up. There's these little yellow squares that keeping popping up on my screen while scrolling through something. They then disappear as soon as I scroll up or down again or open a app, tab, etc.
Info:
MacBook Pro, Mac OS X (10.7.2)
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Jun 2, 2010
I just brought a brand new IMAC 21.5" the base model (NVIDIA GeForce 9400M graphics) with 4 gb RAM. I downloaded the trial version of adobe cs5 to check if it runs ok but when I am starting things from scratch like just creating things from a blank canvas it runs so slow like trying to paint stuff and render it comes up with a loading screen it just doesn�t do it straight away. But when I am working on photos it seems to run ok. Is there away to solve this issue? Do I need to updated my RAM to make it run smooth?
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Apr 18, 2007
I have an eyelash-sized dark streak on the center, bottom (dock area) of my Powerbook G4 15". At first, I thought it was dirt, or another external blemish, but if I move the cursor over it, it obstructs the view of the blemish (instead of appearing beneath it.) Also, I have a small, almost white, faded dot which appears to grow and expand larger if the Powerbook is running for longer than 4-6 hours.What is frustrating is that neither show up under screen captures. Is my monitor full of external stains and blemishes which I cannot remove, or is there something actually wrong with my display?
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Oct 18, 2008
It seems one of the defect possibilities of the new manufacturing process is that the new Macbooks or Macbook Pros can get dust trapped behind the glass screen. At least, that's what happened to my Macbook. So they let me return it, and I got a Macbook Pro, and now the new Macbook Pro, though a thing of beauty, has a bright dead pixel in the top middle screen, as well as a dimmer dead pixel 2 inches to the left of that one. I heard that Apple's dead pixel policy was three dead pixels or no deal on an exchange, but I just bought the computer a few hours ago. Do you think I have a shot at them replacing it? I hate to think of staring at this, (bright) dead pixel for three years, (not to mention the other dimmer dead pixel).
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May 23, 2009
I have RightZoom, so when I click Maximize it always fills the whole screen. I hide my Dock unless I mouse over it, and my windows won't maximize over the bottom 5 pixels of the screen. I drag the bottom right corner of the window, and it doesn't make it any bigger.
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