Mac Pro :: Screen Suddenly Freezing Up And Becoming Pixelated?
Dec 26, 2010
I own a Mac Pro (2x2.8ghz Quad Core Xeon, 6gb DDR2 Ram, Nvidia 8800GT, running in 64-bit mode), and a 30" cinema display. I am running OS 10.6.5 at the moment as well.
What happens (and its been happening all day, rarely happened in the past), is that my entire screen freezes up for no real reason, and becomes completely pixelated and nothing but my cursor moves.
The pixelation even makes it through the force shut down and into the grey apple startup screen, the logo is pixelated there as well.
For some reason, I can't seem to reset the PRAM (no second startup chime?), and I can't seem to enter safe-mode either (shift at startup?)
Right now, the problem isn't happening, but at this rate I expect it to start pixelating very, very soon.
Does anyone have any tips?
I have AppleCare, but I need to fix this asap. I'm a photographer and a very big project depends on it (needs to be submitted by tomorrow morning).
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Dec 4, 2008
This is the image I get on my iMac 2.4 GHz Intel Core Duo OSX10.5.4. I have repaired permisions and removed all login items. Once I move the cursor or open up a window the screen clears behind the cursor or window etc... It freezes up at least once or twice a day...
I started up again and attached another screen, the image was normal on both screens. But alone the iMac still starts up with the pixelated screen.
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Dec 3, 2008
This is the image I get on my iMac 2.4 GHz Intel Core Duo OSX10.5.4. I have repaired permisions and removed all login items. Once I move the cursor or open up a window the screen clears behind the cursor or window etc...Any suggestions? It freezes up at least once or twice a day...
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Apr 25, 2012
My work and Home MAC PRO are both doing the same stuff. The screen goes black and when I have an opened window it repeates itself when I drag it throughout the screen?
Info:
Map Pro
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Jul 8, 2008
I have a G4 Powerbook 1.67 that I don't take anywhere. It just sits on an iCurve as a home computer. Never been dropped, damaged, looks as good as new.
That said, the screen sometimes gives me these red moving pixels which distorts the screen image a bit (pic attached). And lately the screen has been going out at times with lines across the screen, then intermittent blackouts.
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Feb 18, 2010
Sometime this morning the screen on my mac became very distorted (almost pixelated.) I restarted while holding the shift key and it was resolved for about five minutes, then started up again. A friend suggested it could be a blown video card? I've attached a photo.
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May 3, 2012
I have a macbook Pro 13", bought in 2010. Recently my screen has been going pixelated at random times, it normally goes away fairly quick but is happening more and more. I'm wondering if it is the Video Card which needs to be replaced?
Info:
MacBook Pro, Mac OS X (10.7.3)
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Sep 3, 2010
I have been having problems with my Macbook pro(5 months old) screen lately. The screen goes all pixelated and messed up, please see pictures. I don't know what is wrong and surely this can't be lag as my laptop is a pretty good model and from the most recent update.It does this randomly ever now and again but it is very concerning to me. Should i consider asking for a new mac/refund.....
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Mar 4, 2008
I've had two crashes (really weird ones) since I got my mac pro 3 weeks ago. Is that too many to have and should I be worried about this?
Description: The screen distorts - I see a version of the app I had open but it's all distorted and pixelated. There are medium to small squares everywhere that imbue things w/ different colors. I can move a version of the pointer around (almost like a pointer attached to a box) but I can't click on anything. Nothing responds.
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Mar 26, 2012
my late 2006 MacBook Pro's screen has turned all pixelated. Not sure if there's a way to fix this or if I should just take it in to the Genius Bar.
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Jun 19, 2012
I was using my computer and it was just fine. I closed it carefully (as always) and left for a few minutes. When I came back and opened it up, the screen was completely pixelated. I turned it on and off and read several forums and tried cleaning the drives and nothing is working at all. As I've been working on it parts of the pixelation of bright colors have begun flashing a little bit. Not a lot but a little. Black doesn't seem affected by the pixelation but you can see lines in the white areas. Also when images are fading in and out, they don't become pixelated until they are at their brightest. When they are fading in and out they appear fine.The graphics card in my computer is a Nividia GeForce GT 330M. SO I'm guessing from this that the graphics card is damaged or whatever. I can't afford to have apple repair it for $400 and the nearest apple store to me is two hours away.
Info:
MacBook Pro, Mac OS X (10.7.4), Nividia GeForce GT 330M GraphicCard
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Dec 9, 2014
Since updating to Yosemite I get a pixelated screen on my IMAC ..
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May 23, 2012
My MacMini suddenly started freezing up EVERY TIME I tried to use the number keypad. I figured it must be the keyboard so bought a new one. It is doing the same thing - if I inadvertantly hit a key on the number keypad it freezes and I have to reboot the computer for anythink to work.What's happening and what can I do?
Info:
Mac Mini, Mac OS X (10.6.4)
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Oct 30, 2010
I own an early 2008 iMac running Snow Leopard. A few months ago, it started getting a little buggy and running slow, you know, things you would expect from a computer that's now 2 years old. But then it started freezing and giving me "kernel panics". Of course, the first thing I did was install VirusBarrier and remove any and all viruses it could find, and I repaired the disk and disk permissions and ran all the diagnostic tests from the install DVD. Then I left it unplugged for a day, upgraded the memory from 2 GB to 4 GB and did everything a second time. After all that, everything seemed to work just fine.
Now it seems to be starting all over again! This time the virus scan only picked up a few Windows viruses on an old external hard drive and repairing the disk, disk permissions, and running diagnostics turned up nothing. I've done everything I know to do, short of taking the thing back to Apple! Right now, the main issue is this bug at startup that's really just freaking me out. Linked is a video of what happens. The apps that run at startup are BumpTop, HughesNet Status Meter (as of last month), and Brother Printer Utility. [URL]
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Sep 17, 2008
I'm on Mac Pro os x 10.5.4 and having a problem with my computer waking up from sleep or as it is booting up.
As it wakes up from sleep, the screen becomes blank or shows weird, pixelated bars all over the screen. When I try to move the mouse or press something on keypad, the computer freezes after and I would have to force shutting it down by pressing the power. It doesn't always happen, but quite often these days.
Also, when it's booting up, it sometimes will freeze with a blank screen in the middle and won't show the desktop.
Everything worked fine until a few days ago, and i'm wondering what's suddenly causing this problem.
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Jan 21, 2009
Whenever I play HD movies on my iMac in full screen with QuickTime, you can always see the pixels, some are big some small, like boxes. Is there any fix to this? also this is a Aluminum mid level 20 inch iMac
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Jun 19, 2010
I have an iMac G4 running 10.4.11. (not intel). When I turned it on today, it was all pixilated, little white squares in between the colored ones. I can hardly make out what is on the screen so I can?t really choose anything using the mouse. Everything else seems normal except for the the screen.
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Oct 14, 2010
Got the iMac 27" Late 2009 (bought it when it came out). Its always had the 'pixelated' issue (see attachment) just before the login screen appears but I've never bothered too much as its not been a problem, until recently where I am getting a lot of 'Kernel Panics' (screen wipes down and locks done entirely, have to restart to get the system up and running again). I am starting to think that the screen issue is finally starting to shows its true colours. Yes, I've done the PRAM resets, disk repairs, up-to-date with all the software etc. No joy.
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Jan 14, 2010
I have a late 2006 24" IMac which has a myriad of issues. The most concerning to me at this point is the occasional appearance of a 1-2 pixel wide horizontal line which runs from 2" across to sometimes as much as 12" across the screen. It happens most often on the desktop and in firefox. It disappears as mysteriously as it appears.
Could the graphics card be going bad? Any ideas on what might be happening and how I might be able to solve this.
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Jun 12, 2010
I'm having a problem on my mbp screen, although it happened only once just an hour ago. The screen goes flickering magenta and white and some pixelated image. I needed to force shutdown using the power button because it seems to stalled. After restarting, it went to normal. I dunno if it has anything to do with the gfxstatus utility that I've installed the night before. I know it might be the nvidia graphic card itself but I just don't have a clue right now. My MBP is just 8 days old and my 1 to 1 exchange has expired since it covers the 1st 7 days only.
My MBP spec:
MacBook Pro 17" AG, i5 2.53 Ghz, 4gb RAM, 500gb Hitachi HD, 512mb nVidia GT330M video card, Mac OSX 10.6.3, with everything updated. Tthe attached pic is not showing the exact image since the screen was flickering etc and I'm just using a camera photo. I just noticed while I'm just surfing this forum + facebook, my temperature is at 67-70 degree celcius, which is high (normal around 38-45). I look at Activity Monitor and found that Kernel Task is using up to 80% of CPU. I have a feeling that this is not normal, and it had not happened before.
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Apr 27, 2012
My MBPro, OSX 10.4.11 boots up to frozen blue screen with little pixelated squares.
Info:MacBookPro, Mac OS X (10.4.11)
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Mar 27, 2009
i had the macbook Core 2 Duo for About 8 months and it was working great.
yesterday i left a file download in firefox for 5 hours then went back to check on it , it was working FINE, Then i got Back after 2 minutes and the screen is suddenly white and not showing anything i shut down the laptop and restarted , there was a chime and just white screen...i connected the laptop to an external monitor AND EVERYTHING IS WORKING on the external screen but the laptop screen is white!
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Jan 19, 2009
lately, my mba has been behaving a little weirdly. its screen would suddenly become a little dimmer when the brightness in the room has not changed a bit. after a long while(15 min?), it'll turn brighter again by itself, and again without any change in the lighting of the room. the change is not big but obviously. any idea? can it be some software? or setting? or a defective light sensor?
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May 20, 2009
before I went to bed, I was playing the Sims 2, when my iBook G4 crashed. Our power cord can be a bit dodgy, so sometimes that happens. I didn't really think about it much, just closed the laptop and went to sleep.Last Monday morning, I opened it and pressed the power button. It began turning on, and got as far as the grey screen with the apple and the spinning circle. And then it just froze. The circle stopped turning.
I freaked out a bit, and restarted it a bunch of times, each time with the same result. (One time it stopped spinning, and then told me a restart was required. Huh. The rest of the times the exact same thing happened though.) I even tried unplugging and removing the battery, but it made no difference. So eventually I just shut it and decided to try again later.Last Tuesday I opened it and pressed the power button without much hope, and again the apple and circle came up just fine, then stopped, but then a bunch of words and numbers popped up.I'm a complete computer noob, but they don't look good to me... or are they good?
Kernel version:
Darwin Kernel Version 7.9.0:
Wed Mar 30 20:11:17 PST 2005; root:xnu/xnu-517.12.7.obj~1/REEASE_PPC
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Aug 30, 2010
My screen works fine for the most part, but sometimes it goes really dim. When I move the lid, it goes back to normal. What is causing it to all of a sudden go dim? I have Apple Care for my Mac, but I've installed a new hard drive and new RAM; does that void my warranty?
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May 29, 2012
I bought my 2.66 GHz Intel Core i7 machine back in May of 2010 and have been very happy with it until I put OSX Lion 10.7. Now I regularly get Black Screens Of Death when the screen just goes black and I have to restart the machine. With the amount of bug traces my machine has been generating to Apple I would have thought this issue should have been sorted out. What did they do in Lion which is so different from Leopard and why haven't they sorted this out? If this continues then unfortunately I may have to consider moving back to Windows as I can't work like this. I've got GfxCardStatus running with Integrated Graphics but this means I can use my Apple Cinema Display.
Info:
MacBook
Pro, Mac OS X (10.7.1)
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Apr 6, 2012
I have a 2008 Mac Pro, which has served me well since I got it, at least until a day or two ago. At that time, it started exhibiting sporadic black flickering on screen, paired with freezing. At first, everything would freeze except the audio, which would continue playing uninterrupted, and after a minute or so the system would unfreeze like nothing happened. Now, though, it seems to have gotten worse; the system doesn't seem to recover after a flickering episode, and even the audio will get stuck into a one second loop after a while.
I tried resetting the PRAM and the SMC. When that didn't work, I tried restarting into Lion Recovery mode with Command-R. For some reason, that sent me right to a reinstall screen, but it didn't matter, because the screen started flickering and the system froze almost immediately after startup. I'm pretty sure that what it froze in was a separate recovery partition, so that should rule out any software issue. I'm guessing that my video card is fried, but I'd like to see what others think; I'd like to avoid buying a video card that I don't need.
Info:
Mac Pro (Early 2008), Mac OS X (10.7.2), GeForce 8800GT, 6GB RAM
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Apr 14, 2012
my mac os x version 7 screen keeps freezing
Info:
iMac, Mac OS X (10.7)
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Apr 18, 2012
I am worried that my computer is heading for a crash. I bought it in January 2007 and it has served me well up until the last couple of months. The screen freezes more and more frequently. Although I have tried all three USB ports on the back, my wireless mouse freezes constantly. (Yes, I have installed new batteries multiple times.) Sometimes there are very brief flashes of black behind whatever screen I'm working on.
Info:iMac, Mac OS X (10.6.8)
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Mar 30, 2009
Dear members, what causes the mac mouse curser to suddenly jump across the screen?
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