IMac G5 start up stuck on Apple Logo

My iMac doesn't start up all the way. I hear the bong then the Apple logo shows up with the spinning dial and that's as far as I get. I've tried leaving it on for awhile but all that happens is that the fans start to run and I have to shut it down using the power button. The computer does fall under the
Extended Repair Program so I've already taken it in and had the power supply and logic board replaced hoping that it would solve the problem but it didn't (and I didn't have my computer for two and a half weeks). It worked okay for two weeks and then it wouldn't boot up again. Since then I've tried resetting the PRAMS and the SMU. I've also tried to run the hardware check from the OS CD and it fails before I can get any results and all repairs it tries to do also fail. I've even done an erase and install of the OS which got the computer running again for two weeks and then it won't start up again. I bought the iMac "used" so I'm trying to avoid having to pay for repairs if I can (forget about deep pockets because I don't have any at all right now). Does anyone know if this sounds more like a harddrive problem or is there another way for me to test the hardware? I'm writing this on my VERY reliable G3 but I miss my G5 so please help.

Sorry I haven't posted for the last couple of days. I will take the computer back to the store tomorrow. I just wanted to try to find another way to test it before I took it in because if doesn't relate to the power supply or the logic board I'll have to pay Apple $85 just for diagnosing the problem (the 90 day warrenty on used Macs doesn't apply to be because I bought it from the prior owner and not Apple). I should have also said, in my original posting, that the other problems the computer had before I took it in the first time (i.e.-falling asleep, loud fans, distorted picture) have gone away since the new parts were put in and those symptoms were listed over and over again as being related to the power supply issue. I didn't notice anyone posting anything like my problem as an symptom of the power supply recall. I know I'm reaching for some magical answer but I thought I'd try. I'll let you know how it goes.

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IMac not starting up/stuck on apple logo

My iMac wasn't seeing one of my external hard drives so I thought I'd restart to try and fix
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Got a feeling it's a HDD issue but am hoping not..
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I tried all the usual options - safe mode, resetting PRAM, etc, plus a few others I'd not known prior - recovery mode, etc. Nada.
I couldn't even get mine to start from a CD.
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I am using a mid-2012 MacBook pro. I was using Yosemite when it started having issues.
For the past few months I would have a grey loading bar on startup that would go away in a minute or less. This past week my Mac started running incredibly slow, freezing on every window. I tried to install updates in hopes it would fix it. However, after updating it would take minutes to boot, then it stopped booting.
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I tried all the usual options - safe mode, resetting PRAM, etc, plus a few others I'd not known prior - recovery mode, etc. Nada.
I couldn't even get mine to start from a CD.
I went the Genius Bar at the Apple Store - they were able to run Disk Utilities, then Disk Warrior and fixed some minor issues, plus "blessed the hard drive" - in the end, however, I ended up needing the operating system reinstalled.
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IMac wont boot up - stuck on Apple logo with Spinning wheel.

(Title is the Problem) any fixes?
Ive tried repairing disc using the installed disk/utility and it says that the Macintosh HD cannot be repaired & i really dont want to lose all my files.
However..
I have my iMac Dual booted with W7, Now is it possible to do the following....
Go to:
Windows icon (bottom left) > Computer > Copy Macintosh HD > External HDD > Paste?
(so in effect its a backup)
Will i then be able to reinstall OSX and then load my files from it, or restore from it? (from the Ex. HDD)
Many Thanks in advance.
(1st post by the by)
Tom
EDIT:
Just thought:
If i reinstall the OSX - Will my files already upload onto the new OS install? As i have a feeling that Windows does that when upgrading - whether its the same for Reinstalling is a different matter i s'pose.
Message was edited by: Tom.Rhodes

Boot with your install disc, launch Disk Utility from the Utilities menu after selecting your language, and repair the disk. You can't repair the boot volume. Now some other tips. Reinstalling Snow Leopard only replaces all the OS components and basic Apple apps, such as TextEdit, Mail, and Safari, but leaves everything else in place. There's no chance of losing data unless it's already corrupted and lost anyway. There's no need to muck around with the windoze stuff, which, IIRC, won't work anyway.

Imac wont start stuck on apple logo lion

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If 10.7.0 or later...
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I am still getting the wheel of fortune randomly while I am typing this post, Techtool Pro is running memory test none stop, Drive Genius is scan the hard drive and Disk Warrior is checking permissions.
I removed the extra 8 GB of memory, the Mac gets even slower and still get the random wheels when trying to do more than 1 thing at once...
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Have you reinstalled Snow Leopard? Before doing that see the following:
Kappy's Personal Suggestions for OS X Maintenance
For disk repairs use Disk Utility. For situations DU cannot handle the best third-party utilities are: Disk Warrior; DW only fixes problems with the disk directory, but most disk problems are caused by directory corruption; Disk Warrior 4.x is now Intel Mac compatible. TechTool Pro provides additional repair options including file repair and recovery, system diagnostics, and disk defragmentation. TechTool Pro 4.5.1 or higher are Intel Mac compatible; Drive Genius is similar to TechTool Pro in terms of the various repair services provided. Versions 1.5.1 or later are Intel Mac compatible.
OS X performs certain maintenance functions that are scheduled to occur on a daily, weekly, or monthly period. The maintenance scripts run in the early AM only if the computer is turned on 24/7 (no sleep.) If this isn't the case, then an excellent solution is to download and install a shareware utility such as Macaroni, JAW PseudoAnacron, or Anacron that will automate the maintenance activity regardless of whether the computer is turned off or asleep. Dependence upon third-party utilities to run the periodic maintenance scripts had been significantly reduced in Tiger and Leopard. These utilities have limited or no functionality with Snow Leopard or Lion and should not be installed.
OS X automatically defragments files less than 20 MBs in size, so unless you have a disk full of very large files there's little need for defragmenting the hard drive. As for virus protection there are few if any such animals affecting OS X. You can protect the computer easily using the freeware Open Source virus protection software ClamXAV. Personally I would avoid most commercial anti-virus software because of their potential for causing problems.
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Backuplist
Carbon Copy Cloner
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JaBack
Silver Keeper
MimMac
Retrospect
Super Flexible File Synchronizer
SuperDuper!
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SyncTwoFolders
Synk Pro
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Tri-Backup
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Additional suggestions will be found in Mac Maintenance Quick Assist.
Referenced software can be found at CNet Downloads or MacUpdate.
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And, visit The XLab FAQs and read the FAQ on resolving SBBOD issues.
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HT204204 My phone crashed after updating it to IOS 8. I can't use it cause its stucked on the start up menu, the apple logo with black background.

Hi to all,
I hope someone can help me. My phone crashed after updating it to IOS 8.3. I can't use it cause its stucked on the start up menu, the apple logo with black background. Even when I restart my phone, it is still stuck on the start up menu, the black background with apple logo in the middle.

Slone,
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palkarate wrote:
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IMac G5 start up stuck on Apple Logo

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