IMac will no longer boot-up, Pink Lines

27" iMac running Mavericks, purchased March 2010, a great computer; that is until something goes wrong and local Apple support resources are scarce in my location!
Prior to the issue occurring I was performing a cut/paste from a website to a document and noticed red square dots on the screen behind the document I was working on, all functions were frozen. I did a cold reboot and this started normal then horizontal green lines appeared and the system would not come up. I turned the iMac off via the power button and after a couple of minutes switched on again this time the reboot worked, a error log and the option to report the fault to Apple was displayed, I typed a blurb about my issue and sent it off (I do not know what happens to them it felt good). There were no issues for the next few hours using standard functions like web browsing, Email and documentation etc.
While working on a Genealogy profile later in the day I again tried the 'cut and paste' process from a website to a document and the same issue occurred this time however there was no respite; each time I rebooted white screen, 5 horizontal pink lines about a cm wide the Apple Symbol and the wheel spinning then the pink square dots on a white background the dots were green over the apple symbol no other functions possible.
I would like if possible a diagnosis for this issue and if possible a ball park estimate of potential repair, recovery costs, I store most of my records, media etc on a external HD it would great to restore from a backup rather than start from scratch again!
I have photos of the screen images but cannot post on this forum

I can boot both Snow Leopard and Leopard install disks, no problem. I cannot boot ANY version of Windows install disk (XP, Vista, 7). My Super Duper backup was a backup of my Snow Leopard install to reformat the drive, since one theory was that the partition table was messed up. No go.

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My iMac will no longer boot after half installing Maverick (only the essentials package was opened). How can I reboot it back to 10.8.5?

I was able to get a copy of OS X 10.9, but it wasn't the one straight from the App Store (which is free and I wish I knew before I got this other copy, but oh well). There is nothing wrong with the copy, it just simply doesn't initiate the install when you double click on it.
I installed one of the packages (essentials) off file, but not all the rest of them. For some reason the other packages weren't opening because it wasn't accepting my password, so I restarted the computer to see if that would make anything better.
It didn't. It now boots to the grey apple screen and stays stuck loading. I assume because only some of the install disk was installed, it doesn't really know what to do. But how do I fix this? How do I unistall the essentials package so that it goes back to normal?
I tried booting it whilst holding down "Command+Option+P+R" and it takes me to a limbo area where you can access disk utility. Within disk utility I can see that everything is still there.
What is the process to get it back to normal (I previously had 10.8.5).
Please help!

Thanks for checking in, BDAQua.
Problem solved.
In the docs that came with my Powerlogix accelerator card, I found this sentence buried:
"If you reset the PRAM, the NVRAM code for OS9 compatibility is cleared, so you will have to boot from the Firmawre Update CD and perform this process again in order to boot in OS9."
The "process" it's referring to is the process of setting up the NVRAM for booting into OS9 from the CD.
Fortunately, I was able to find the disk, and it worked as expected. I can now, once again boot into OS9.
Conclusion: My (unadvised) attempt to load Leopard on this old machine apparently reset the PRAM on the accelerator card and cleared the NVRAM code for OS9 boot. Although I did attempt to reset the NVRAM via Open Firmware, it did not reset it on the accelerator card.
So, thank you BDAQua, for your "Ah yes" . . . that's all I needed to steer me in the right direction.
Gratefully,
tupester

IMac will no longer boot ANY version of Windows CD/DVD

I have a 20" unibody iMac 8,1 that originally came with Leopard and has been upgraded to Snow Leopard (currently 10.6.1). During Leopard days, it had Boot Camp running Windows XP (for games) and worked fine. At some point, boot camp was removed and the system was returned to a single partition. Recently, I've decided to install Windows 7 Ultimate 32-bit (retail cd) and so went through the Boot Camp Assistant to create a new boot camp partition and launch the Windows installer DVD. After going through the partition process successfully, the Windows 7 DVD failed to boot, ending in a black screen with a flashing underscore ( _ ). I tried to boot the Windows 7 DVD several times with the same result. Thinking that somehow the Windows 7 DVD was damaged, I got out my Windows XP install CD and tried to boot that, with the same result (black screen blinking underscore _ ). I tried this with a retail copy of Vista Ultimate 32 bit, with the same result. I have run Disk Utility and verified the disk contains no errors. I have tried manually forcing the boot to the Windows install DVD/CD's by holding Alt during boot, and manually clicking on them, with the same result. I have backed up the entire HD with Super Duper and erased the disk and then restored the from Super Duper copy, in case there was a problem with the partition table. All with same result, blinking underscore on a black screen when attempting to boot off Windows install media.
This machine used to have boot camp successfully running XP under Leopard. Now I can't even boot from a Windows install CD/DVD (any kind of windows). What has happened? Did the Snow Leopard installation change something? Is there a firmware update that is needed? I have tried resetting PRAM and SMC with no result. I am out of ideas. All of these windows install disks work fine if I boot them with my MacBook Pro. It's just the iMac that won't boot a Windows install DVD/CD, of any kind.
Help!

I can boot both Snow Leopard and Leopard install disks, no problem. I cannot boot ANY version of Windows install disk (XP, Vista, 7). My Super Duper backup was a backup of my Snow Leopard install to reformat the drive, since one theory was that the partition table was messed up. No go.

IMAC will no longer boot into Windows 7 with Boot camp

I can see the partition on the Mac destop and can access it.
The windows options is available when I hold down the option key when booting but the computer appears to just hang.
I have been unable to get the Imac to boot off the Windows 7 dvd or a repair disk. I just get a white screen.
I could sure use some help trying to get the computer to boot back in Windows.
Thanks in advance.

Oddly enough I turned off the computer for a bit and turned it back on and it boot right into windows.......
I did have my Samsung phone plugged into the usb hub.....I wonder if that was causing some issues...weird.

Imac 21inch 2010 on boot vertical green lines then white screen ,will not load can anyone help please

imac 21inch 2010 on boot vertical green lines then white screen ,will not load can anyone help please

Howdy carliosa,
If your iMac is not starting up normally you may need to do some checking to make sure things are working correctly. I would suggest starting with the steps in this article -
Resolve startup issues and perform disk maintenance with Disk Utility and fsck - Apple Support
Thanks for using Apple Support Communities.
Best,
Brett L

My iMac will no longer go to sleep on its own!

Help!
My iMac will no longer go to sleep on its own! No matter what my settings are under 'Energy Saver', the computer will NOT go to sleep. Rather, the monitor will just turn off and the white light on the front of the computer will come on. The white light does not 'throb', so I know it isn't sleeping.
I'm not running any weird applications preventing it from sleeping, I've tried booting in safe mode, and I've tried resetting the SMC.
This is a RECENT problem - I think it started occurring after installing the 1.0.1 firmware OR Mac OS 10.4.6 update. Does anyone else have this problem??
AHH! Thanks for your help!
Jonathan

Hey everyone -
Thanks for your suggestions.
David.Austin - yes, my power LED does not fluctuate, so I know the computer isn't sleeping, the display is just 'off'. I do have all my disks set to go to sleep. This is a recent problem - everything used to work just fine.
joejoe - I haven't yet tried zapping the PRAM (or NVRAM), but I give that a shot and reset the SMC (SMU) again. If that doesn't work I'm going to have to do a... re-install.
I'll report back with my results. Glad to hear I'm not the only one with this problem.
Agreed - there is something wrong with one of those two updates.
Jonathan

After installing Leopard, my G4 will no longer boot in OS 9.22. (Classic still works, but I need it to boot in OS 9.) Any clues about what the Leopard installer might have done to my machine that rendered OS 9 boot unusable? What can I do to fix it?

After installing Leopard, my G4 will no longer boot in OS 9.22.
(Classic still works, but I need it to boot in OS 9.)
Any clues about what the Leopard installer might have done to my machine that rendered OS 9 boot unusable? (And what can I do to fix it?)
Details:
G4 Gigabit Ethernet
Boot ROM version: 4.2.8fl
Accelerator card added: 1.6 MHz
1.5 Gig Ram
I have erased the partition that had Leopard installed on it.
I zapped the pram.
In Open Firmware, I "reset-nvram", and then "reset-all"
I tried to reinstall G4 FW Update 4.2.8, but that must be done when booted from OS 9, and of course, that's the problem: it won't boot into 9.
I tried restarting from 9.2.1 DVD.
I tried restarting from an external firewire drive containing OS 9.2.2.
I tried moving a fresh OS 9.2.2 system folder into an empty partition on an internal hard drive. (Partition was created WITH OS 9 drivers installed.)
All attempts to boot into OS 9 give me the same results - grey screen - no spinning beach ball, no icons or logos - just a blank grey screen.
This machine still works fine in OS 10.3 and 10.4, and it worked fine for many years booting into OS 9, until I installed Leopard, and I haven't been able to boot into OS 9 since then, although I have done considerable research online and tried many things.
I have since learned that this machine does not support Leopard - 10.5. Fine, but how did it break 9.2.2?
Any help greatly appreciated.

Thanks for checking in, BDAQua.
Problem solved.
In the docs that came with my Powerlogix accelerator card, I found this sentence buried:
"If you reset the PRAM, the NVRAM code for OS9 compatibility is cleared, so you will have to boot from the Firmawre Update CD and perform this process again in order to boot in OS9."
The "process" it's referring to is the process of setting up the NVRAM for booting into OS9 from the CD.
Fortunately, I was able to find the disk, and it worked as expected. I can now, once again boot into OS9.
Conclusion: My (unadvised) attempt to load Leopard on this old machine apparently reset the PRAM on the accelerator card and cleared the NVRAM code for OS9 boot. Although I did attempt to reset the NVRAM via Open Firmware, it did not reset it on the accelerator card.
So, thank you BDAQua, for your "Ah yes" . . . that's all I needed to steer me in the right direction.
Gratefully,
tupester

Imac will no longer sync iPod

imac will no longer syn with my iPod classic: why not?

http://www.apple.com/itunes/download/
says
OS X version 10.6.8 or later
your signature says
Mac OS X (10.5.8)

IMac will no longer connect to my Airport wireless network

I set up a wireless network at home using Airport Express some time ago, but as of yesterday my iMac will no longer connect to it. The name of the wireless network still appears in the list of visible networks but when I try to connect it just times out. The iMac is only about 12 feet away from the Airport Express access point, and both my MBP and my iPhone are both able to connect as normal without a problem, but the iMac will no longer connect. I have made no changes at all to the network, or the iMac - it just no longer connects. Any help would be much appreciated.
Jason.

If everything else is connecting with no issues, I would go into the wifi setting on the iPad and redo the info there, user, password and anything else related to your wifi at your house.
It is possible whatever he reset may have reset something to default setting which will not allow it to connect. If you need too then verify the wifi setting by comparing it with another device setting that works on your home network.
Good luck

881W Will no longer boot with Radio Card installed

Hello!
I have a Cisco 881W that will no longer boot/operate properly if the internal radio card is installed.
If the card is installed, all I get is the following...
System Bootstrap, Version 12.4(22r)YB5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2009 by cisco Systems, Inc
Testing lower main memory - data equals address
Testing lower main memory - checkerboard
Testing lower main memory - inverse checkerboard
Clearing lower memory rommon use
read_sys_eeprom: not a smart eeprom
Search for cpu type (Field ID 0x09) failed.
Using default value...
Search for Controller ID (Field ID 0x40) failed.
C880 platform with 262144 Kbytes of main memory
Readonly ROMMON initialized
rommon 1 >
if I do a dev I get nothing. If I do a dir flash: I get "bad device name". My cookie shows FF in all positions.
BUT......
If I remove the entire WiFi Radio card (both boards), then It boots fine, cookie appears intact, devs appear, IOS loads, just without the WAP.
Any chance this is a matter of a file getting deleted or corrupted or is this certainly bad hardware? The router sans Wifi appears fully functional.
Thanks!

You should be able to RMA the device. Search the forum for a post on the limited lifetime warranty:). They explain it good there.
Sent from Cisco Technical Support iPhone App

IMac will only safe boot (blue screen when not safe booting).

A buddy asked me to help with his Intel based iMac. It was giving a blue screen when trying to boot up (and an odd cursor along with the blue screen). The cursor moves around the blue screen but looks like two cursors. One cursor is a normal arrow pointer, the second is a rectangle about .25 inch wide and 1 inch tall made up of about 10 horizontal lines.
I'm very familiar with Macs and OS X and was sure it was probably a messed up preference file (most likely login preference). It wasn't.
Here's the odd circumstances:
I have an intel macbook that if I use firewire target disk mode I can boot just fine off his iMac.
His computer will not boot off my Macbook that is in firewire target disk mode.
We cloned his hard drive to an external firewire hard drive (using Carbon Copy Cloner), my Macbook boots off it just fine, his iMac will not.
He's been wanting to go to Leopard so we upgraded his computer (did basic upgrade), but it still blue screened (with odd cursor).
Then we did an erase and install. Still no difference in behavior.
I would almost be convinced that it's a hardware failure, but it will safe boot every time.
Here's what happened when it died. His son was playing a Star Wars game (I'm not sure which one). The kid was in the middle of the game and paused it when it was time for dinner. When the kid went back to play, the computer was frozen. They tried everything to unfreeze it and ended up powering it down. Started the blue screen ever since.
He's going to contact Apple (it's barely still under it's warranty) but I was hoping someone here has another idea what it could be.

I found this topic while trying to find an answer to my problem. It seems we have a similar thing going on with our imacs (although mine is a much older crt imac). I'll copy and paste my original post from the imac board :
Hi
I received a free imac snow (G3 500mhz) from someone. He told me it was broke, and someone told him the logic board needed to be replaced.
I brought it home and tried to start it up. It gave the '?' folder icon. I started up from an OS 9.1 cd - Success! Except there was no HD. I opened it up and discovered that the HD wasn't connect to the ATA cable. I was able to start up to a previously installed Tiger. Except once it booted it would quickly freeze - the mouse pointer would turn into a scrambled beach ball (very strange) and wouldn't move.
I did some research and found about the potential problem with OS X and the imac's firmware. I restarted from the 9.1 CD and installed that OS. Everything seemed fine and was running ok (from my limited time on it). I then DL'd the latest firmware for the imac (4.1.9.) and tried to run it. Except the message came up that the latest firmware had already been installed. So i guess thats a good thing. I don't have to worry about firmware being a problem.
So i did a zero out wipe on the HD and installed tiger from the dvd. But on the first restart after installation (where i should go to the set up assistant) I get the scrambled beach ball and it freezes.
I thought perhaps the HD is faulty and ran disk utility on it - it came back as fine. I doubled checked to make sure it was set to 'master'. it sure was. I decided to swap out the HD anyways since i can't see what else could be the problem and put in a different 30gb IDE drive. I once again zeroed out the drive and did a fresh install of tiger. On restart i get the same scrambled beach ball and the freeze.
I guess i should describe the scrambled beach ball. It's seems like the beach ball icon, except the bits that make it up are out of order and glitched out.. perhaps a video problem?
Could this really be a logic board problem? It was working in OS 9.1 fine. It starts up from system CDs and DVDs fine. Wouldn't a logic board exhibit the same problems on those systems?
Anyone have any idea?
Update - starting in Safe mode (restart with shift held down) works, and i was able to update to the latest version of Tiger, but once i restart with the full system i get the same problem.
This seems to me that it ISN'T a logic board problem, but more of a system software problem. Now my question is how do i isolate and fix the problem in Tiger?
I guess i'll post this question in the Tiger forum, but if anyone has any ideas please let me know.
Thanks

Bootcamp will no longer boot after deleting partition #3 of my new Mac Mini. What happened? Was it the way I tried to reclaim the HDD space for Mac?

Here's my dilemma. I have a new Mac Mini - a week old. I installed Windows 7 on it using Mac's Bootcamp assistant. I then set up and configured my Windows 7 world and everything worked fine. No issues logging in between Lion or Win7 via the restart/option key procedure. Well, yesterday I split my Mac HD partition one more time to create a third partition (was created as an "extra", e.g. possible future partition for another operating system). After creating it, I then decided that I didn't really need it. So I deleted it in Disk Utility and attempted to drag the Mac HD partition line downward so as to "fill in the gap" and reclaim the lost hardrive space. It seemed as if I could reclaim about 1 gig or so, but I figured...oh well.
Well, the Mac HD partition seems to work just fine, but now I've noticed that I can't get into the Bootcamp partition anymore. It wont boot. If I try to verify the partition [doesn't even give me "repair" as an option), then it fails and gives me the following error message: "verify volume failed. invalid request." When I go to the Startup Disk option in my System Preferences section, it displays the bootcamp partition as a folder and not as a drive anymore.
I'm assuming that I messed up some permissions or lost some vital links during my attempted resizing/reclaiming of harddrive space. How do I fix this without having to reload either all of my Mac info or all or my Win7 info? I'd hate to consider the last two days of my life loading this crap up a complete loss.
Thanks in advance!

Thanks for checking in, BDAQua.
Problem solved.
In the docs that came with my Powerlogix accelerator card, I found this sentence buried:
"If you reset the PRAM, the NVRAM code for OS9 compatibility is cleared, so you will have to boot from the Firmawre Update CD and perform this process again in order to boot in OS9."
The "process" it's referring to is the process of setting up the NVRAM for booting into OS9 from the CD.
Fortunately, I was able to find the disk, and it worked as expected. I can now, once again boot into OS9.
Conclusion: My (unadvised) attempt to load Leopard on this old machine apparently reset the PRAM on the accelerator card and cleared the NVRAM code for OS9 boot. Although I did attempt to reset the NVRAM via Open Firmware, it did not reset it on the accelerator card.
So, thank you BDAQua, for your "Ah yes" . . . that's all I needed to steer me in the right direction.
Gratefully,
tupester

Made a new partition on Macintosh HD, Boot Camp will no longer boot.

Specs:
MacBook Air 2013
8GB RAM
i7
512GB SSD
Hello all, looking for some assistance.
My HD is formatted to 400GB of OSX and 80GB of Boot Camp. I stupidly made the mistake of adding a new partition out of the large amount of free space I have on the OSX partition, to format the new partition for Windows. This made Boot Camp no longer boot. On the Disk select screen after holding Option on boot, my Boot Camp partition is not visible. I can see everything on the partition on OSX, however.
To try and fix this, I deleted the new partition and tried to reduce the hard drive back to the original two partitions. However, I cannot extend the OSX partition to fill in the new free space. So now I have a Boot Camp partition, my OSX partition, and 20GB of unused, free space that I cannot use or put back into the original partition.
I asked AppleCare live chat for any assistance, they suggested that I use "Erase free space" in Disk Utility to use the space again. However, the option is greyed out on both the drive and the Macintosh HD partition.
After a bit of googling I saw a suggestion of making a USB Recovery drive to get the space back through Disk Utility that way. This still did not work; the results were the same, unable to add the space back to the original partition, and "Erase free space" is still greyed out.
Using BootChamp (notice the H, this is an app that allows you to restart and boot directly into Boot Camp through OSX), I get a DOS screen saying "No bootable device – insert boot disk and press any key". I cannot get this screen any other way.
I have repaired and verified the disk and its permissions, to no avail.
I cannot think of anything else to do short of formatting the entire drive but this is obviously less than preferable. I additionally do not have a backup of the BootCamp partition (as it is not accessible), even though everything is visible on the partition through OSX.
So, in summary, I added a new partition to my HD and now Boot Camp will not boot. Any ideas?

"rEFIt is an alternative bootloader for your Mac that's a lot more forgiving. If you don't think investing in iPartition is worth it, I'd give this a shot:
In rEFIt, do not boot: go to the EFI shell, and type "gptsync". This will tell you that the partition table is out of sync, and will offer to sync it for you. Say "yes", naturally. Now reboot and all systems should be go!"
This worked.

HT2801 My IMac will no longer play DVDs.

My IMac will n o longer play DVDs. Audio CDs play fine. I reset the SMC. Looking for suggestions.

langlitzfamily wrote:
Looking for suggestions.
Reset the PRAM > Resetting your Mac's PRAM and NVRAM
Clean it > Amazon.com: Memtek CD and DVD Lens Cleaning Kit
Have it serviced > Apple - Support - iMac - Service FAQ
In that order.

IMac 20" Will no longer Boot.

I went to change the icons on my desk top this week and while playing around with them i miss clicked "Burn Macintosh HD to Disk" and it brought up bar as if it were copying something there was not Stop button and any way to cancel it and either way my dvd writer doesn't work so i just let it run it course after a few mins it stopped but i think noticed it had locked me out of all my external hard drives i went in and tried to change the permitions back to Read & Write but it would auto return it to "Custom" whenever i clicked off it, I went to restart my Mac thinking it would just reset it's self and now when i tried to boot it up it gets to the Apple screen with a spinning timer thing and it just stays there. Tried to re-boot it with the snow lepord OS Disk in and it still just sticks at the apple screen. Any one know how i can fix it or even get it to re install the OS?

If your DVD writer does not work, how are you booting from the Install DVD? Perhaps both the HDD and the ODD are shot. A repair/replacement of both may be in order.
Dah•veed

IMac will no longer boot-up, Pink Lines

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