OS X :: 10.6.1 Snow Leopard Hangs And Blue Horizontal Lines On Screen?
Nov 2, 2009
Over the past month I have encountered a number of bugs with Snow Leopard on my MacBook Pro (mid 2006). Ever once in a while, usually during high performance task (like watching flash or encoding with handbrake) the temperature of my cpu will spike to 85-90 degrees celsius and then the system freezes.
During this freeze, I can still move my mouse, but I am unable to click on anything on the dock or any program. Moving the mouse over the dock does not invoke the magnification either. I have to do a hard reset to fix the problem.
Also every once in a while, a long blue horizontal line will appear in on the screen. (sometimes their in iChat windows, sometimes safari, and sometimes the desktop as shown in the photo).
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Jan 1, 2010
My iMac boots up (OSX 10.4) and when the desktop is about to appear the little spinning wheel start to get "fuzzy" (yes only the wheel), then when it's time for the desktop to appear the entire screen goes blue with horizontal lines across it. I can see nothing on the screen at all except that mess.
Weird thing is, if I boot using the install disc, everything is fine. he display never screws up. So I am guessing some file or something is corrupted in OSX?
I was going to do a restore, but since there have been some updates since I got it, I am worried about that whole process and not being able to get to my pictures and what not on the HD. The procedure where I can archive the current OS and reinstall the original seems like my next step.
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Aug 24, 2014
I've had my macbook air 13" 256GB for four days now, I had it shipped to me in Canada because I wanted the ram to be changed to 8GB. When I'm scrolling around on the internet I see a horizontal line appear in the lower half of my screen, it disappears quickly so I haven't been able to get a screen shot. I have apple care, should I take my laptop in? Is this normal? I've been very careful with my laptop, I haven't dropped it or anything (I even have it in the Tech21 Impact snap case).
Info:
MacBook Air, iOS 7.1.2
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Apr 29, 2012
My iMac screen has developed multicoloured horizontal lines in random spots across the screen..Is there a fix for this?
Info:
Imac intel, Mac OS X (10.4.11)
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Oct 1, 2010
I have a MBP purchased in late 2006 so it's fairly old.
Lately I've been having really random lock ups and freezing maybe once every week or so. Sometimes when I hard reset it, there's a few horizontal lines across the screen, usually just on the background. It'll go away if I restart it again.
I used the onboard disk checker and no problems are detected. Is this a sign that the hardware will fail soon?
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May 15, 2010
The screen started by having the occasional 'white out' where it would be in use and a white screen would fade in for a few seconds then usually return to normal.
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Dec 6, 2014
when I start up in Safe Mode and only in Safe Mode in my iMac (mid 2011- HD 6970M 2048 MB) appears white horizontal lines. I changed already the graphic card almost before a year.
Info:
iMac (27-inch Mid 2011), OS X Yosemite (10.10.1)
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Nov 1, 2007
I thought it might have been a graphics card problem, but these lines move with the apps even in expose mode.
Its driving me nuts. I had this problem before while on 10.4 Tiger and now again on 10.5 Leopard (fresh install on new hard drive).
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Jun 5, 2012
I purchased a late 2006 intel core duo iMac 20'' with an upgrade to os Lion. I've been using it for less than 24 hours, and it has managed to freeze up on me twice, with a followed appearance of pixel abnormalities, horizontal lines, etc. I did my research and it seems to be a graphics card problem, which is a Raedon ati x1600 ,256 mb.
Info:
iMac, Mac OS X (10.7.3), Late '06 iMac/2.16ghzICD/2gb
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Jul 1, 2014
my MacBook pro display that there are frequently horizontal grey lines going across my screen. I've noticed it mostly when the display color should be grey or white, but that's not always the case. It occurs mostly in my Google search bar using Firefox, and also occurs heavily on Facebook in the comments/reply section of a post. Outside of the browser I've also seen it when looking through some personal photos, especially of the sky, the lines will seem to sort of outline different contrasts in white or light tones, kind of like the Magic Wand tool would do in Photoshop. The lines do flicker and change when scrolling.I attempted to snap a photo with my iPhone the best I could.
My specs:
-13" Macbook Pro (2009)
-Intel Core 2 Duo 2.26 GHz
-NVIDIA GeForce 9400M
-Resolution: 1280x800, 32-bit Color
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Sep 10, 2014
After 1 month there are small thin horizontal lines appear on my macbook pro screen. i never drop or bang or what so ever.
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Dec 6, 2014
I have a 2 month old rMBP Mid 2014 and i am experiencing horizontal lines in the middle and bottom of the screen. For example, If i was browsing a site and then close the window you can still see parts of the website in the middle of the screen. I took the laptop in for the technicians to have a look and they a blaming it on the software,claiming that Gfxcardstatus is causing the problem. The problem still persists even with gfxcardstatus turned off. Does Gfxcardstatus do this? Is it the Lcd or gpu failure? Take a look at the photos ....
Info:
MacBook Pro, OS X Mavericks (10.9.5)
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Apr 23, 2012
blue horizontal line on screen?
Info:
MacBook, Mac OS X (10.6.8)
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Nov 30, 2014
grey screen no apple followed by blue screen with vertical lines. Graphics and logic board replaced <6 months ago. What to do? I held down shift, it gets HOT HOT and makes noises. (for safety mode) followed by a blank grey screen and blue screen. Then tried the other way (I think it's command alt delete? I don't remember) and it turned from grey (no apple symbol) to blue blank. Then third time, grey followed by blue with vertical lines, not blocky clear lines that you can see if you are close to it.
Info:
MacBook Pro, OS Lion
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Dec 27, 2009
since installing sl, my imac itself works fine however i am stuck with a solid blue wallpaper. everytime i try and change it, it goes back to blue screen within 30 seconds or so. not a crashing problem like others have faced, but annoying nonetheless. got to second level of apple support and still could not figure it out. anyone have any ideas?
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Dec 31, 2008
I have just updated my iMac G5 to 10.5.6. When I restart, it hangs on the blue screen before log in. I have restarted in Safe Mode (no problem there) and removed the APE files in the library folder, as suggested on support.apple.com. I have also repaired permissions and verified the drive. Still no luck.
Is it really possible that the computer needs hours to restart after the update? And would it be better for me to restore using Time Machine or do an Archive & Install with the Leopard discs? The computer was acting a little funky before I updated to 10.5.6 (iTunes was sluggish), but I never had a problem rebooting.
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May 28, 2012
I have a 2006 Mac Mini using Snow leopard OS X 10.6.8.It will start up to show the 2 User accounts that are set up however when one of the accounts is selected all that appears is a totally blue screen with only my mouse curser working on it. Is there a fix for this?
Info:
Mac mini, Mac OS X (10.6.8)
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May 29, 2012
After upgrading from Leapard to Snow Leapard a few weeks ago on my macbook there has been a blue screen flashing before the login screen. Is this normal? Or am I being peranoid? could it be that i installed app cleaner? I unistalled app cleaner and it still did the same.
Info:MacBook, Mac OS X (10.6.8)
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Jun 11, 2009
I installed the 10.5.7 update yesterday on my iMac and had no issues with it. It was rebooting with no problems until this morning I tried to boot Mac OSX 10.5.7 and it hangs on the blue screen with just the pointer and a message telling me that spotlight has quit unexpectedly. I have tried switching to safe mode and still have the same problem and I have also tried to repair the disk on Disk Utility but it tells me that disk appears to be ok. I could reinstall Mac OSX but I don't want to loose files and music that I have on Leopard.
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Jul 15, 2010
After what seemed to be an improper shutdown my Macbook will not boot. I have tried using fsck to no avail. Booting to the leopard dvd causes it to restart. Flashing PRAM doesnt seem to help and it will not boot into safe mode.
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Feb 10, 2006
My IBook G3 will not start up. I can get the gray apple screen with pinwheel and then after a really long time it will go to a blank blue screen. A couple times it went to the login screen instead but in the user id it says "other" and when I try to enter my username and password it won't recognize me. I am a college student and one of the Apple geniuses here did a check of my hard drive and it checked out okay. We were not able to get it to start up in safe mode; it seemed like it was starting in safe mode but then it came to the login screen and would not allow me to login with my usual information. I was able to start up in single user mode and run fsck which found a couple things and after another fsck it said everthing was fine. But, it still gets hung up at startup. When I try to boot from the OS X installation CD it doesn't seem to be booting up with it, it only goes to the screen to install OS X. According to the directions on the Apple support site when I insert the CD and start up holding down the "c" key it should start up and then I should be able to repair permissions but I can't get that far.
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Jun 4, 2014
my ibook g4 hangs on blue screen except in safe mode
Info:
iBook
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Sep 3, 2010
My almost 3 year old MBP shows a full screen of artifacts like horizontal lines with blue and pink boxes. It did it while simply browsing the web. It had a message in the center of the screen that said to push the power button to power off in several languages.
I powered off the computer. Tried to restart it and on the start up screen the Apple appears in the center of the screen with the same pink and blue boxes in it and the spinning symbol below is stuck and the computer will not start up.
Any ideas on what my problem is? I have about 2 months of Apple Care left.
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Oct 22, 2006
For the first time ever, my Titanium Powerbook won't load OSX. I was using Excel when the beach ball started spinning. I've had that happen, so I just went to force quit. It wouldn't force quit for me. So I let it sit a while and tried again. Again, it wouldn't force quit. So I tried to Restart the Mac. It restarted, but when it did, I don't see the OSX load screen. I get a blue screen with the spinning lines, but that's it.
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Jul 24, 2009
My iMac (which was bought in september of 2006) fell around 2 months ago and cracked on the left side of the screen. It wasn't such a big problem until blue vertical lines began forming around the crack and now spreading. Now I don't know what to do, would it be cheaper to get it fixed at an Apple store or can I replace the screen, and if so where would I be able to buy an LCD 15" screen?
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Jun 10, 2012
I have a Macbook Pro 15" (mid 2010) 2.53GHz Interl Core i5 running OSX Lion 10.7.4. Generally the computer and screen are in good condition and have had no damage. The screen has Vertical blue lines and there is a tint of blue generally. The startup apple grey screen however is perfect, it is only when it enters the login screen that the lines appear. All the colours are off. Other than these lines the computer works perfectly
The computer was used yesterday (09 June 2012) without a problem for approx 1hour. It was then left for the day indoors on a desk out of direct sunlight. The computer was switched on later that evening and the problem started to appear I have already tried to reset the PRAM and SMC with no affect.
I also read that it may be a cable problem, however as the startup screen works perfectly i question this.
Info:
MacBook
Pro, Mac OS X (10.7.4)
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Sep 28, 2009
I am on a brand new 3.06 GHz iMac. Installed Snow Leopard, 10.6.1. In general I don't experience any of the problems other people seem to have. But twice now my screen has turned blue while I am in the middle of something. All the open apps disappear and the Finder seems to relaunch. It only takes a few seconds. I don't have steps to reproduce it. Both times I had several apps open and had video/DVD running in the background.
Has anybody seen this?
I am a notorious file-saver which means I haven't lost much work through this but if it keeps happening I might have to go back to Leopard.
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Aug 30, 2009
getting really annoyed here, installed snow leopard on 24" iMac 2.66 GHz Intel Core 2 Duo and all seems to go ok until it restarts
it just hangs on the blue screen for hours and hours, even a power off/on results in the same problem
i can boot into safe mode no probs, but always end up on hanging blue screen when i reboot (safe mode ok)
deleted all login items etc, but still no go
not running any haxies either
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Jun 9, 2010
I installed snow leopard on my iMac. Everything seemed to go ok. It took about 45 minutes to install and it restarted but now it sits on a blue screen. What gives?
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May 11, 2012
I upgraded from Leopard to Snow Leopard and I wanted to restore my computer so I found directions that said I should put the snow leopard disk back in the computer and restart it. Well, I did that and now all I have is a blue screen. What do I do!?!? I've tried manually turning it on/off and it will turn off, but still goes back to blue screen with nothing on it.
Info:
MacBook Pro (13-inch Mid 2010), Mac OS X (10.6)
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