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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Jul 1, 2012
I am showing several vertical stripes on my monitor...an absence of color if you will.
Info:
iMac (20-inch Mid 2007), Mac OS X (10.6.8)
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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.
Info:
iMac, Mac OS X (10.7.3), 20 inch (early 2008), Core 2 Duo
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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 froze...no 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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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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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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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?
Info:
iMac, Mac OS X (10.6.1)
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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?
Info:
MacBook Pro, Mac OS X (10.7.4)
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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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Jun 23, 2012
I have recently noticed two vertical lines (seem to be a lighter shade of display screen color) running top to bottom on my desktop. They stay on my display screen all of the time. This lovely old guy was purchased May 2006 but has every upgrade (except Lion....running Snow Leopard) and full component of memory...serves me well but I need to know if this is a sign I am losing my hardware.
Info:
Imac with Intel Core Duo, Mac OS X (10.4.11), 512 MB memory 160GB
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Feb 9, 2012
2 vertical lines, running from top to bottom, have suddenly appeared on my screen. On a white back ground they appear blue and green. they have a wide space between them. I switched off and on but they are still there. Whats happening?
Info:
iMac
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Jul 6, 2012
Yesterday a vertical blue line appeared on my Mac display, which can be seen all the time but not when it is turned off.I can't make a screenshot off it, you can't see it on them.My Warranty just ran out one month ago.And I didn't used the imac very often, wasn't much gaming or running it the whole day, just using it for school works.Actually I am very disappointed of Apple, bought my first imac because I thought instead of a PC it would last 4 years at least.
Info:
iMac (21.5-inch Mid 2011), Mac OS X (10.7.4)
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Jun 15, 2012
How do I get rid of a vertical white stripe that appeared on my iMac screen? It is two inches wide. I just updated Firefox before it appeared.
Info:
IMac, Mac OS X (10.4.8)
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Sep 20, 2010
I had FCP open and I was 'log and transferring' a bunch of footage from P2 cards to my RAID. While that was busy working I was surfing the web in FF and listening to tunes via itunes. I had itunes mini player open. I wanted to see more info about a song and tried hitting the green button to maximize. Nothing happened. So I try command+tab but I get a 'bonk' sound and I don't switch apps. I though it was odd that even when I clicked on itunes the menu bar still said firefox.
Next I did the good 'ol command+option+esc to see if itunes was 'not responding'. this is what I see: Odd... no apps appear here even though I had 3 open not including Finder. So I go to my dock and click on finder and I get this dialog box:
So I tried going up to the Apple icon and chose shutdown. I clicked OK and waited and the machine never shut down. I had to to a hard shutdown. Upon restarting all is right with the world again. It's just weird that I have never run into anything like this in all this time and this new machine as been working perfectly since the day I got it.
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Apr 12, 2010
I was browsing the internet on my '08 iMac when the system suddenly froze immediately followed by the screen turning to nothing but vertical lines. I fear this may be an issue with the graphics card, but would anyone be able to offer any further insight?
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Feb 19, 2009
My macbook is a week and a day old. It is the newer whitebook with nvidia and all that. Coconut battery says its 123 months old? why is this? The only thing i can think of is that apple possibly had a used macbook come in and they switched out some parts and changed it to the new one? btw it was bought new at best buy.
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Aug 19, 2009
The problem is sometimes switching from one user to another, we are able to type in a password, but the login and back buttons are disabled, like you are not able to click on them. It is basically frozen and we have to manually shut it down.
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Jul 20, 2009
I hve a imac desktop 6 months old with iLife09 installed. I have been for 4 one to one lessons but still can not get a grip of the imoves program .My previous mac with tiger worked fine, I wondered if it was possible to install the old system in my mac to run allong side 09. My local mac shop was not sure but thought I would have to remove Ilife to do so they allso said they no longer support the older system. I wonder if you san confirm this or are they talking mince
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Jun 1, 2014
My computer has red stripes on desktop...
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Apr 5, 2009
This seems to be the case, but was wondering if anyone knew for certain?
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Feb 2, 2009
we are trying to hook up our TV as a secondary monitor (for hulu, netflix, etc) but it defaults as the primary monitor. We would like to keep the imac as the primary monitor, and have the TV as a secondary, but cannot figure out how to do it! The only way we can get the imac back to primary status is if we use mirror mode. Once we take it off mirror mode, the TV becomes the primary monitor again, and there appears to be no way of switching it in OSX display preferences.
I've done similar hookups with my laptop, and the TV defaults as the secondary monitor. Why isn't this happening with our iMac? Any ideas?
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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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Dec 11, 2010
I bought a imac 21.5" less than a year ago and I just sent it in to get fixed because of black clouding underneath the LCD panel anyways after sending it away for over a month (and they gave me a piece of crap pc laptop for a loaner) i get it back it's good as new, 2 weeks later (today) now this pink line is stuck across my screen so i;ve been reading some threads and this problem doesn't go away anyway i'm getting pissed off with this i'm about to buy another one so I always have one thats not in the shop (ridiculous) or a pc, i really like my imac but this sucks,, what should I do?
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Aug 22, 2014
I have an I Mac with OS X 10.9.4 (13E28) a black message bar appeared on my desktop - everything I type is replicated in the bar and my screen is not holding it jumps to another screen
Info:
iMac
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Sep 11, 2014
WiFi exclamation mark had suddenly appeared on my imac. I have rebooted imac and router
Info:
iMac, OS X Mountain Lion (10.8.5)
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Jan 25, 2007
My parents recently bought an iMac. Yesterday my mom was playing a game when the computer froze. Neither force quit or holding the power button was doing anything so in her frustration she unplugged the system. Today, after plugging in the system again, it won't turn on.
I press the power button on the side of the wireless keyboard and the green light on the keyboard turns on for about 3 sec and then starts flashing. No fans start up and the screen does nothing.
Information:
iMac and Macbook Pro
Mac OS X (10.6.3)
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Feb 15, 2009
I just bought my Intel-based iMac last night and it took forever to turn on out of the box. I guess I made a mistake by doing a "soft" power down last night, because this morning it will NOT turn on. I've tried using the power button and waiting. I've tried unplugging and plugging it back in, and then using the power button, and waiting. Nothing works. I've been a PC user for 20 years and just bought this, my first Mac, last night. I think I've made a huge mistake! How the heck do you turn these things on????
Information:
iMac Intel Based
Mac OS X (10.6.4)
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Sep 8, 2007
In my system preferences a light switch has replaced my Universal Access icon Any way to fix it?
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Apr 10, 2012
Its not possible finish the system by using the "switch off" command under apple. System is pending with running circle.
It is only possible by using the button on backside. How can I find out reason and change?
Info:
iMac, Mac OS X (10.7.3)
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Jun 19, 2008
I have a 20" intel-based dual core Mac which i have had for about since early 2006, i haven't had any big issues with it until a few days ago when it suddenly shut itself down and refused to power back up. I ran through the checklist that Apple Support provides, including resetting the SMC by unplugging everything and waiting 15 seconds or so but none of it worked. Eventually I just left the power cord unplugged overnight and in the morning I plugged it back in.
After having the power cord plugged in for a few hours and the machine turned off, i tried pressing the power button again and to my amazement it powered back on! Immediately i ran the TechTool Deluxe software that came with my extended protection plan (now expired) and everything was fine. Later that night however, I had left my computer on for a few hours before returning to it and realizing it had shut itself off again. Now I am back to where I started, going through the checklist provided by Apple and am really starting to get concerned. Does anyone know of anything else I can do, short of taking it in to an Apple store? Or is something needed to be replaced?
Information:
IMAC-Intel (Early 2006)
Mac OS X (10.4.11)
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