Intel Mac :: Freezes Randomly With Vertical Stripes?

Apr 23, 2012

I'm having huge issues with my 20-inch early 2008 iMac running 10.7.3. I upgraded my RAM (to 4Gb) 8 months ago and everything was running nice and easy until I upgraded to Lion. Either one of these things happen: My screen goes entirely grey or blue with white faded thin vertical stripes at random timesMac freezes working with any Adobe applications (mouse cursor still works but I can't click anything until I turn off and on)Mac freezes for a while and after a 30-second delay clicking and pressing buttons frantically everything goes back to normal 

The strangest thing is that when I play Sims 3 for example (a beast of RAM and video drainer) nothing happens. I tried almost everything from repairing permissions to re-install my memory modules. I couldn't run the hardware test. 

Note: I live in Brazil so sending my machine to a Genius Bar is completely off the question.

iMac, Mac OS X (10.7.3), 20 inch (early 2008), Core 2 Duo

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Intel Mac :: Vertical Stripes On Monitor?

Jul 1, 2012

I am showing several vertical stripes on my absence of color if you will.

iMac (20-inch Mid 2007), Mac OS X (10.6.8)

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Intel Mac :: Have 4 Vertical Stripes Across The Entire Height Of Monitor?

Apr 30, 2012

I have 4 vertical stripes across the entire height of my monitor, the stripes are there even before I log on. My 17" imac is 6 years old. Do I have to buy a new computer?

iMac, Mac OS X (10.6.1)

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MacBook Pro :: Green And Purple Vertical Stripes And Not Rebooting?

Sep 1, 2009

while surfing the internet (I was reading an article on CNN and scrolling down to continue reading), the screen color changed to tinges of green and purple. The entire thing keys, no mouse, not even force quit...nothing. I had no choice but to do a hard shut down by holding down the power button until the laptop just shut off (Macbook Pro). In the middle of rebooting, (at the grey screen with the apple logo on it, I got the familiar circular dial that ticks around as it loads) a screen wipe similar to the effect of some screen savers went from the top of the screen to the bottom turning the screen from grey into green and purple vertical stripes.

It also said "you need to restart your computer" and proceeded to tell me how to do so in four different languages. Upon doing so, the same thing happened...several times. I tried booting it into safe mode by holding down the shift key until the grey apple background appeared and it seemed to be working as the loading was taking forever. Alas, the same thing happened. I took the battery out and held down the power button for 10 seconds, put the battery back in only to suffer the same effect. The next genius bar reservation isn't until Friday.

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MacBook Pro :: Vertical Stripes At Boot Then Black Screen?

Feb 23, 2010

I have a MacBook Pro with Leopard. On boot, I get a screen of vertical blue stripes with the Apple logo, sometimes intact, sometimes split across the stripes. The spinning activity wheel is there too. After about 30 seconds, it gives up the ghost and the screen goes blank. It's still powered on, but just the screen is blank.

I've attached an image of what the screen looks like.

I've tried Command Option PR to reset the PRAM and VRAM but the problem remains. Any ideas?

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OS X :: Cursor Keeps Disappearing / Leaving Only Few Black Vertical Stripes

Apr 17, 2010

My cursor (in all forms) on my macbook seems to be disappearing--it appears that every other column of pixels has gone clear as well as a clear border, leaving only a few black vertical stripes as the normal cursor. It's a black outline when it's the hand and it's a few colored stripes when it's the spinning wait cursor.

Interestingly, when you do the ctrl+zoom in a few degrees, the cursor reappears.

If anyone thinks it matters, I was in the middle of backing up via time machine when it disappeared...

Any suggestions are appreciated.

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MacBook Pro :: Periodic Vertical Stripes On An Early 2008?

Jun 16, 2012

For about two weeks I've noticed green vertical stripes appearing on my early 2008 MacBook Pro. As you can see the photo below, it doesn't completely obscure content on the screen. The problem is also transient. It appears, sometimes as a flash, then disappears. In the picture below, the issue continued for longer than ever before (about 1 min). Is my video card about to die? Could this be a bad connection?

MacBook Pro, Mac OS X (10.7.4)

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OS X ::macbook Cursor Disappearing / Leaving Only A Few Black Vertical Stripes

Mar 17, 2009

My cursor (in all forms) on my macbook seems to be disappearing--it appears that every other column of pixels has gone clear as well as a clear border, leaving only a few black vertical stripes as the normal cursor. It's a black outline when it's the hand and it's a few colored stripes when it's the spinning wait cursor.

Interestingly, when you do the ctrl+zoom in a few degrees, the cursor reappears.

If anyone thinks it matters, I was in the middle of backing up via time machine when it disappeared...

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IMac :: Unable To Switch On System / Vertical Stripes Appeared Two Months Ago

Aug 25, 2010

Its a G5 iMac ihave been using for abt three years now. first i got the vertical stripes about two months ago and today when i tried to switch it on, it won't. I turned it off last night after use and when i tried this afternoon, it was hot and it does not turn on?

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Intel Mac :: Freezes And Crashes Randomly

Feb 3, 2012

My iMac randomly freezes and crashes on me.  Most of the freezes occur when scrolling with my trackpad on websites with Google Chrome.  I get the pinwheel and have to use the power button to turn off and on the iMac.  I haven't noticed any particular connection to Flash websites or video related sites.  It just seems kind of random.  I've also been careful to have absolutely nothing else running and it still does not prevent it.   

Also, from time to time the iMac will crash and go to a solid color screen.  Either Blue-Gray, White or Black.  It seems to be random colors.  When this happens, I have to use the power button to cycle it off and back on again. 

Some info about my iMac: Model Identifier: iMac7,1  Processor Name: Intel Core 2 Duo  Processor Speed: 2 GHz Mac OSX 10.6.8 

What could be causing this or how can I diagnose the problem?  I can give more info if needed.

iMac, Mac OS X (10.6.8)

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Intel Mac :: Snow Leopard Randomly Freezes?

Apr 28, 2012

Only a laserprinter is connected. Sometimes  I can work for a few weeks without problem, but then the computer  freezes. The computer sounds 3 monotone chimes in a row and repeats this, keyboard an mouse become inactive till I do a hard shutdown.Took the computer 2 times to the Apple store, they tested for a week but apparently nothing happened then.

iMac, Mac OS X (10.6.8)

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Intel Mac :: Magic Mouse : It Just Randomly Freezes, Cutting Off All Ability To Navigate The Desktop

Mar 22, 2012

It just randomly freezes, cutting off all ability to navigate the desktop.Re-booting the system resolves the problem, but leaves me with a lot of lost work.SOMETIMES taking out and putting back in the batteries resolves the problems, but not often.The kayboard continues to work, so it doesn't seem to be a bluetooth issue. 

iMac (27-inch Late 2009), Mac OS X (10.7.3)

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MacBook Air :: Randomly Has Gray Vertical Line Appear Down Middle Of Screen?

Aug 25, 2014

My macbook air has randomly developed an issue with its display. Occasionally, when t's already running, a grayish/white line runs vertically towards the middle of the screen. It's about an inch thick. The computer will still run as normal, you just can't see the part of the screen being covered by the line. When I restart my mac line goes away. It randomly comes back again and the process starts all over.

MacBook Air, OS X Mavericks (10.9.1)

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OS X :: System Freezes With Vertical Pixelated Lines?

Apr 10, 2010

My computer (24" 3.06Ghz intel core 2 duo) won't start. When I try to turn on or restart my iMac I get vertical rows of pixelated lines across my monitor on the white startup background with the apple logo and it will either freeze up or the background turns gray and I get a message that says I should restart my computer. This has also happened when restarting using the Apple hardware test (which doesn't report any errors).

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Intel Mac :: White Sun Stripes From The Top Of The Screen

May 10, 2012

I own a 3year old iMac 24" model 2008. On the top of the screen theres appeared some white "sun"-alike stripes.

I got the iMac from someone which unfortunately is a smoker, so the first thing i did was cleaning the glass, which did alot for the fuzzy smudges. But theres something wrong in the LCD screen itself. 

My observation are that its easier to see when theres backlight, so when the screen is black its almost not visible. 

I wonder if theres any chance that dust/smoke has got its way inside of the LCD even though the stripes look way too symmetric.

iMac, Mac OS X (10.7.4), 24" 2008

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IMac (Intel) :: Red Stripes On Desktop

Jun 1, 2014

My computer has red stripes on desktop...

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OS X :: Snow Leopard - Freezes Randomly

Sep 1, 2009

Did an upgrade install from 10.5.8 to SL (MacPro early 2008, 8800 Nvidia). Didn't use the Mac for a couple of hours - when I came back I had a black screen and no way of reviving Mac (only forced shutdown via power button). this happened twice. Did never have a problem previously.

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Mac Pro :: Randomly Freezes At Startup And Shutdown

Jun 23, 2014

I have got a problem with my brand new Mac Pro. It randomly freezes at start-up and shutdown. I sometimes am able to work around the problem by turning on the monitors last or switching them off first but it does not always work and is a pain anyway. While waiting for Apple or another manufacturer to release a decently priced 4k display, I am using 2 HP 24' monitors inherited from my previous desktop. 

One is connected via an HDMI cable (HP2405) and the other via a thunderbolt to HDMI cable with a DVI adapter (HP2448).Would I be better of using a Thunderbolt connection for both displays ? Or any other connection?

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Software :: GarageBand Not Respond Or Randomly Freezes

Jun 16, 2009

I used to open up GarageBand 09 normally and it would take about 10-20 seconds. Now it takes a couple of minutes while it says its not responding. I don't think this is normal. Also sometimes when I am scrolling down through software instruments it randomly freezes and then shuts down unexpectedly. I have the new 13.3" 2.4ghz macbook. i have alot of free space and no files in the GB folder. I haven't touched anything regarding the system's font, new or old.

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Software :: Mac Freezes Randomly And Screen Turns Blue

Nov 9, 2009

My Mac will freeze at random moments (not while running any particular app or program) and go to a blue screen, after a few seconds it clears up by itself. Sometimes it will happen several times in a row, sometimes 10 - 15 minutes in between.

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MacBook Pro :: OS X Mavericks (10.9.4) Trackpad And Screen Freezes Randomly

Sep 10, 2014

I got a new Macbook Pro Retina (mid-2014) a few weeks ago and the trackpad and screen randomly freeze even when the only thing I have open is Safari. In other words, it doesn't feel like my computer has a 2.6 GHz Processor and 8 GB 1600 Mhz Memory. My downloads folder also constantly has the loading bar under it; it goes away when I remove it from the dock and replace it, but appears again after downloading one thing.

This is really frustrating when I got a new Macbook so that I wouldn't have to deal with these types of problems. They're all issues that I never encountered with my Macbook Air (mid-2011).

OS X Mavericks (10.9.4)

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PowerPC :: Ibook Keeps Randomly Locking Up - System Freezes In The Process?

Nov 30, 2007

recently my ibook keeps randomly locking up, it first started the other day when it got stuck on a blue screen at start-up eventually it came on, but kept locking up, no spinning beech ball just completely froze, i held down the power button to turn it off, i then had to wait at least ten minutes before trying to start up again, if i didn't it would get stuck on the blue screen, then something else weird happened, when i started up it came up with the mac set-up assistant similar to when you first upgrade, so i turned it off again and it went away, so i started up again this time i noticed that spotlight was indexing, despite it already doing that ages ago when i upgraded to leopard, so i thought this had something to do with it, because it kept freezing in the process, but today i turned it on, let it index and to my surprise it didn't lock up, so i went to play world of warcraft, and as soon as the login screen came up it locked up agai

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PowerPC :: PowerMac G5 Randomly Freezes Then The Fans Go Into Turbo Mode?

Aug 23, 2008

Fall 2005 PowerMac G5 dual 2.0Ghz with Leopard 10.5.4

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MacBook Pro :: Quicktime Freezes Randomly For About Ten Seconds Then Resumes Playback

Jul 27, 2009

quicktime randomly freezes when watching full length movies 1+ hours, it happens randomly and i am unsure what causes it.

Latest quicktime + perian.

Tried reinstallling quicktime and no change.

i wonder if this:

Jul 27 02:48:00 MacBook-Pro kernel[0]: IOHIDSystem::relativePointerEventGated: Capping VBL time to 20000000 (was 22349540)

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MacBook Pro :: Freezes Randomly And Beeps When Coming Out Of Power Down Sleep

Jun 27, 2014

So, I have a late 2011 MBP 2GH i7, OSX 10.9.3. 500GB HD 16 BG 1600 Mhz DDR3.  

The problems started a while ago when the computer started freezing at random times. The mouse would move and there was no "pinwheel" but the computer was unresponsive. When I closed the screen the power was still on and the screen did not shut off. The only way to reset the computer was to hold the power button and do a hard reset. I don't remember if I replaced the RAM from 4BG to 8GB Crucial Memory before or after the computer started freezing, either way, shortly after or around the time when I replaced the ram the hard drive also failed.

I replaced the HD with I believe a Seagate hybrid drive with a small solid state segment. This whole time the computer is still freezing and now since I have a hybrid drive the Apple store can't support because it's not factory specs and MacMall here in Santa Monica can't find anything wrong with the hardware or software after running all of their tests. 

At this time I have a feeling it is the ram so I purchase a new 16GB Crucial RAM. Everything is great till it yet once again freezes in the same way as before BUT!! Now if the computer sleeps because the battery run's low, when I plug it in and the computer reboots (grey opaque screen with the vertical lines as the bottom) it starts beeping 3 times. I hard reset via the power button and the computer boots up as normal (although a little slower).  

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OS X Yosemite :: IMac Retina Freezes And Restart Randomly On Clear System

Dec 2, 2014

my iMac random freeze and restart, on console i not see any message about kernel panic and etc system clear install ! what's happened ?   

log1  System Version: OS X 10.10.1 (14B25) 
Kernel Version: Darwin 14.0.0
Boot Mode: Normal
Model: iMac15,1
RAM details...[code]....

iMac, OS X Yosemite (10.10.1)

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Intel Mac :: Vertical Line On Screen?

Apr 5, 2012

There is a vertical line that runs from the top to the bottom of my screen. How do I get rid of it? 

iMac, Mac OS X (10.6.8)

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Intel Mac :: Vertical Lines Going Through Screen?

Apr 8, 2012

Whenever I watch videos or anything that moves I will see a line going through the video. Its not very visible, But its still there. Some say it could be a virus, others say hardware problems.

iMac, Mac OS X (10.7.3)

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Intel Mac :: Vertical Ant Line Across Display

Apr 19, 2012

I started noticing what I describe as ant-lines running vertically across my late 2009 27" iMac. I am fairly certain that they were not there before but I can't really remember. I did a search and found some discussions regrading video issues and vertical line anomalies but none like what I am seeing. url...It's noticable from a distance of about 2 feet and closer. It's not visible on white or black but midtones is where I see it. It gets really distracting at about 20" and closer, especially in iPhoto when scrolling through photos.Has anyone else seen anything like this and do you guys think I will have any luck getting something like this fixed with a Genius appointment? I do still have AppleCare.

iMac i7 27, Mac OS X (10.7.2)

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Intel Mac :: Vertical Lines On Screen?

May 7, 2012

vertical lines on screen?

iPad 2, iOS 4.3.2, I use QuickOffice & Dropbox

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