IMac G5 won't boot and fan just runs

I have an older iMac G5 that has always been a little flakey...it would just shut off for no reason intermittently. For the most part, I could deal with that as this is no longer my primary Mac, but when I did the last iOS update, my external TimeMachine drive started getting errors - won't write because the drive was read only and now, when I turn on the computer, it won't boot...the fan just runs loudly.
I researched this and tried the following:
Reset the SMU - didn't resolve
Unplugged everything and rebooted - didn't resolve
So I have a couple questions since I'm ready to toss this computerI have a current Time Machine backup, but don't have a machine to restore to
Is there a way for me to get at the Time Machine backup (I think I can just plug it into another Mac)?
How can I get my iPhoto, iTunes, iMovie, etc. files off the backup and is there a way to import them into my existing applications on my MacBook Pro?
Any help would be VERY much appreciated!!

You may have the old exchange/repair program power supply capacitor issue on your iMac. You might be able to find another on my FAQ*:
http://www.macmaps.com/usedrefurbished.html
Note, recovering to an Intel Mac directly from Time Machine may not be practical because of various issues with compatibility.

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Won't boot and fans go mental

since updating to 10.5.5 my 17" iMac has began to fail. not sure if this is a coincidence or something to do with the recent updates.
after about 10mins it started to freeze up with the spinning beach ball of death
then it would freeze after 2mins
now it won't boot and the fans go mental and it shuts itself off.
i held down some keys to get the text up of the booting process and first it went on about "intelPSU missing" or something and finally would say "I/O error" "14 majors" and stuff
could it be the hard drive?
could it be the ram?
could it be the power supply?
stupid mac
i can get it into target disc mode but my macbook pro doesn't see it.

It's probably a combination of a failing power supply unit and logic board. I suggest you take it in to be looked at.
Try booting from your install disc and running Disk Utility to check things out.
1. Insert the Mac OS X Install disc that came with your computer, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk.
Reboot from your hard drive and repair permissions.

Imac g5 won't boot and cd stuck in drive

please help -
my imac won't boot up (right now we're assuming a faulty power supply, the original already went and had to be replaced). furthermore, there's a cd i need to get at in the cd drive - is there a manual eject for the 2004 imac g5's?
thanks!!!

Welcome to Discussions - What model Mac do you have? You can try lying it face down on a soft towel and pressing the eject button as you try to boot. If you have already had the power supply replaced, call Apple immediately and tell them, they should take care of it.

IMac G5 Won't Boot and Optical Drive Won't Read Correctly

I have an iMac G5 17" 2.0GHz with a 300GB SATA drive installed about 6 months ago. Everything was fine until it recently ceased booting completely--it gets to the blue screen but the progress bar never even begins and there it sits. The fans come on fast and loud almost right away. The hard drive reads in the System Profiler, but doesn't show up at all in the Disk Utility; Disk Warrior 4 replaced the directory with ease and it appears on the desktop in TDM. It will not under any circumstances boot from a Mac OS X system disk, but will boot from the Disk Warrior and TechTool CDs. As a sidebar, the optical drive is making all sorts of loud unusual noises and reads only as a CD-ROM in the System Profiler (in the Disc Burning Tab nothing appears) even though it is a superdrive. 10.4.9 installed.

If you have AppleCare, suggest that you contact them and/or their Online Chat Support.
Also, see if your computer qualifies for one of the G5 iMac Repair Programs
**WARNING: DUE TO SECURITY REASONS, PLEASE DO NOT POST YOUR COMPUTER'S SERIAL NUMBER ON THESE MESSAGE BOARDS.**

I have an iMac that won't boot up. Chimes, Gray screen w/ apple icon, spinning gear and progress bar at bottom, about 20 sec then shuts off.

I have an iMac that won't boot up. Chimes, Gray screen w/ apple icon, spinning gear and progress bar at bottom, about 20 sec then shuts off.
Please Help

The internal drive is malfunctioning. What backups do you have?

My imac won't boot and is making a loud beeping sound

my imac won't boot and is making a loud beeping sound - any ideas. i tried replacing the ram but that didn't help.

Lenovo G560 - Issue with won't boot and black screen after HDD upgrade

Lenovo G560 - Issue with won't boot and black screen after HDD upgrade.
What happen: My laptop was working fine, no blue screen issue, no funny business at all. I bought a new SSD Intel 120 GB and thought it would be a good idea to replace the HDD. I shutdown and disconnected the power adapter, waited a couple of minutes and removed the battery. I opened up the back case and replaced the HDD. And put all the screws back and put the battery back in.
Problem: The very first time I turned the power on, nothing happens besides a black screen. I pressed the dvd drive it works and opens up and closes. I waited for about 30 mins and still has blac screen. When I mean black screen, no bios menu, no logo, just a black screen with the fan sound on.
I have tried these:
1. Unplugged everything - battery, adapter, and pressed the power on button for about 60 seconds, nothing, the laptop turns on with the LED display on for both on and battery LED's. But nothing but black screen, no sound of windows loading just the fan and black screen.
2. I tried putting back my old 2.5" and nothing but black screen.
Thoughts and suggestions?
Solved!
Go to Solution.

Hi Autoexit173,
Welcome to Lenovo Community!
As per the query we understood that you are facing issue with system not booting in your Lenovo G560 laptop.
As you have mentioned that the system not booting, please try to remove the RAM and turn on the system and check if you can hear any beep sound. Also try to clean the RAM slots and check for the issue.
Click here for the steps to remove the RAM and refer page number 40.
Hope this helps. Do post back if issue persists!
Best regards,
Ashwin.S
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IMac G5 won't boot from CD drive, Please Help

My iMac G5 won't boot from the CD drive. There is no operating system on the hard drive so I want to install a fresh copy of Leopard. I have tried a couple different methods, but I keep getting the same end result. The first method I tried was booting from the CD drive by holding the C key during start up. The Leopard disc was automatically ejected after about 20-30 seconds. The second method I tried was booting the iMac to the "question mark file screen," which is when I inserted the Leopard disc. Usually on other Mac computers, this is when the computer will show the Apple logo and prompt you with the installation process. Not this iMac, it just ejects the disc shortly after I insert it. I'm not sure if it's the CD drive that is having the issue, the hard drive, or something else.
If you have any ideas, they would be greatly appreciated!
Thank you,
Chris

Where did you get the CD from?
If it is from another Mac, it is probably specific to the hardware in that Mac and is not capable of boot your iMac.
Allan

I have an iMac that won't boot up. I've read all posts on this subject to no avail. When power is switched on, it chimes, Apple logo appears, spinning wheel, then loading bar starts to fill. It gets to about 25% then switches off! Help please!

iMac that won't boot up! When power is switched on it chimes, Apple logo appears, then loading bar, then spinning wheel. Bar seems to load up and gets to around 25%, then reverts to the start again, gets to about 20% on the bar and then switches itself off leaving a black screen. Tried all the remedies on internet with no avail so would welcome some advice other than binning what is a relatively new computer. Earliest appointment Apple could offer was Thursday 17th, really useful for a business user _ not impressed,

You've probably tried this, but will it Safe Boot? Restart holding down the Shift key until you see the grey progress bar. You'll need to input your admin password during bootup. If it will boot you can then try to eject the disk using the various suggestions here that you haven't tried already:
http://osxdaily.com/2009/08/28/eject-a-stuck-disk-from-your-mac-dvd-super-drive/
Or this (not tried this myself, but if things are desperate): http://www.youtube.com/watch?v=n7NYW9Dr448

Upgrade from snow leopard 10.6.8 to montain lion on a iMac system won't boot getting a crossed out circle

Upgrade from snow leopard 10.6.8 to montain lion on a iMac system won't boot getting a crossed out circle

Clean install OS.10.6.8 update it completly. May be you ignored some firmware update.
I have two incedents.
My thunderbolt port stopped working after upgrading to ML 10.8. I booted from external 10.6 , 10.7 still didnt work. Then i clean installed 10.6.8 and ran software update it updated the thunderbolt firmware and all is well now. This firmware update for some reason didnt show up in ML 10.8.
Secondly , when i upgraded my Brother's Macbook from 10.5 to 10.6.3 it would install but stuck with crossed out circle. Then i downgraded checked for update found an efi update , then the 10.6.3 worked fine.

Arch Linux won't boot (and Linux in general)

Hello everyone,
I've been having this problem for about 3 days now. I finally made an account and post the problem since I can't find a solution (I solved most of my past problems by searching forums and googling so I had never posted before).
So, I was installing Arch linux and Windows 7 on my machine (eee pc 1201t) but had problems booting into linux. First I installed Windows and it worked fine, then I installed Arch linux (this isn't my first time) and rebooted after finishing the installation. But my laptop just won't boot. It just displayed a blinking cursor on the top left of the screen. No error messages whatsoever. It was my first time encountering the problem so I thought reinstalling would do the trick. But it didn't. So I started researching on the same problems on google and discovered that it could be either a HD problem or corrupted MBR or some other problem. My drive works fine, since I can copy data onto it using a live cd (Ubuntu) and Windows works fine with it.
I'm thinking of using "dd" command on my drive and repair the MBR. I would like to know if you guys have encountered the same problem before and what kind of solution you applied.
Note: I also tried installing Ubuntu on my machine but the result was the same.

ngoonee wrote:Live CD, setup grub again, and profit?
I tried this first, had no luck or maybe I wasn't doing it right.
nixpunk wrote:So are you booting into windows using grub or just ntldr?
My laptop boots using ntldr only. Grub does not seem to work. I tried installing Arch and Ubuntu but I had the same result (blinking cursor on the top left of the screen).
schuay wrote:As always with boot problems, you will need to provide some more data about your setup. Output of 'df -h', contents of /boot/grub/menu.lst, install location of grub, etc. Without that, other people can only make guesses about the possible solution
I'll keep that in mind. Sorry for the lack of details regarding my problem. I will try to add as much information as I can the next time I post.
Anyway, I think I solved the problem. I zeroed the MBR on my HD by issuing the command "dd if=/dev/zero of=/dev/sda bs=512 count=1 and grub installed just fine. Thanks for the reply everyone.

IMac - it won't boot up.

I have a 2 yr. old 23.5" iMac that won't boot up. Is there a history of power supply failure or mother board failure on these macines?

Have you tried resetting the SMC? Unplug power cord for 15 seconds. Plug back in and then press power button.
Here is the link for info about resetting SMC.

IMac 2007 won't boot

I have a strange problem.
My 24" iMac 2007 won't boot. It won't boot either from CD/DVD or anything. It will display the white screen with the Apple logo, and the spinning wheel under it, until the spinning wheel will stop spinning. Using my old Linux knowledge, I find that it seems like it freezes on "Login Window Application". Before this happened the iMac would occationally freeze, creating strange wave-patterns across the screen.
I have tried the following:
1) safe mode - same result
2) reset NVRAM - same result
3) single user - I can fix the filesystem, delete loginmanager files - same result
4) boot from Apple CD - same result
Every time the computer hangs, the strange waves will appear on the screen. My guess it is the video card that's causing this - and I need to replace it.
Can anyone give me heads an idea to confirm my suspicion - or to find the real culprit?
regards

OK, thanks, that was a helpful reply.
Somewhere in my browsing, I gathered that any Mac OS install disk would have the AHT. After searching around, I found the CD/DVD.
After extended testing, the AHT says nothing's wrong, but I find two things strange:
1) the AHT tells me that my memory is 1 GB, while it is 2 GB.
2) the AHT tells me nothing about my HDD - as if it's not there.....
I make two conclusions from that; namely that one RAM block is faulty and the HDD is invisible seen from AHT. The latter would stress me immensely, if I hadn't seen the entire drive from single user mode before. There could be some faulty sectors though that would mean that the OS is behaving strangely.
Please advise on hints on where you would go next - anyone?

IMac G5 won't boot up

My iMac g5 won't boot up. The indicator comes on, but the screen stays black. Help!

Looks like you have both an Intel and an older iMac G5 PPC. Do you hear the chime on startup?
The chime is quite meaningful. It means the computer passed the P.O.S.T / Power On Self Test.
http://www.tuaw.com/2010/10/22/mac-101-whats-happening-when-your-mac-is-starting -up/
See
http://support.apple.com/kb/ts1367

My computer won´t boot and restarts at Apple logo with the spinning thing

My computer won´t boot and restarts at Apple logo with the spinning thing and I can´t get it to work.
Before this happen I had left the computer on without a cable plugged in and so it ran out of power.
I just pressed the startbutton again after I´ve plugged it in and this problem started.
Any ideas?
Mattias
Sweden

WRONG FORUM Sorry

IMac G5 won't boot and fan just runs

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