G5 won't boot from any drive (internal or external)

I've been studying this forum for the last several days, hoping to find something to help me solve the problem, but so far I'm still stuck.
Here's the deal...
I bought a refurbished G5 2.7DP (early 2005) from Apple's Online Store and got it about a week ago. I ran it awhile, the way it came... then I updated to OS X 10.4.4, installed some apps, set up everything and all was fine for several days.
Then, all of the sudden the mouse locked up and I had to power down with the button. When I tried to restart (and every time since), I power up, get to the gray screen with the apple, and that's as far as it goes.
After several minutes, the fans start winding up... but no matter how long I wait, it never proceeds (never gets to the spinning gear stage).
Internal HD, SuperDrive:
The first thing I tried was the G5 install disk, but it doesn't load.
I've tried starting with the option key down (numerous times) and the mounted volumes show up in the startup manager (internal HD, SuperDrive), but selecting either one gets me no further than the gray/apple screen.
I've tried the startup manager with a FireWire HD and my G4 in Target Mode (both with OS X 10.4.4) and they'll show up, but don't get me past the gray/apple screen.
I'm confident that the G5's drives are good, I've run Apple Hardware Test (from the G4's SuperDrive, targeting the G5) and no problems are found.
I eventually used the G4 to erase the Target G5's HD and installed a commercial Tiger system, to see if that would work (couldn't use the G5's installer disk, 'cause the G4 wasn't a G5). No better off than I was before.
I can boot the G4 from the Target G5's HD and it works fine... and the installer DVD (in the G5) also mounts and is accesable from the G4.
Anyhow.... as I said, I'm confidant that the G5's drives are working.
MEMORY:
The G5 came with 512 megs (2x256), then I added another gig I got from OWC.
During my troubleshooting process, I've removed the OWC memory and nothing changed. I then replaced the Apple memory and replaced it with the OWC memory. No change.
None of the memory tests I've run have indicated any problems, but I wanted to rule it out as the problem.
Yes, PRAM has been zapped and the PMU has been reset (both, several times in the last few days, just to make sure)
When I came to this forum to start doing research, I'd pretty much concluded that there's a missing link in the boot process...
I've read some threads about similar, but not the exact problem I'm having... and I've tried several of the Open Firmware instructions suggested to others (reset-all and a coupla others that I can't recall at the moment).
I have a one year warranty, but the last thing I wanna do is send back the Mac (and Apple doesn't like my state or they'd put an Apple Store here
I just feel that it's a firmware/software issue that I'd be able to fix myself, I just need a little help with the missing link to the boot process.
So.. somebody please tell me that there's a simple one line OF command that'll get this rascal to boot again (or whatever it takes).
Thanks... sorry my post is so lengthy, but wanted to get as much info in one post as I could so it wouldn't be bits and pieces scattered over numerous posts.
Any solutions much appreciated!
marty
powermac dual 2.7 G5 Mac OS X (10.4)

I just remembered something that I meant to mention. When I startup the G5 with the option key down and the installer dvd in the superdrive, the startup manager will allow me to run Apple Hardware Test and the computer runs normally (fans don't go wild).

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MrHoffman wrote:
The EFI firmware, the SMC and possibly the disk I/O path seem good potential candidates for culprit.
Load and run the hardware diagnostics.
Reset the SMC, and reset the LOM.
I'm running the EFI diagnostic tool now. Firmware and disk I/O path came to mind, let's just hope it's not a major hardware issue
beatle20359 wrote:
Hi Jeff,
Do you have the specs of the xserve and the version of OSX server you are trying to install? Does the Xserve have the RAID card installed in it and what size are the drive modules.
All the best
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*Apologies in advance for the lengthy post. I just want to be sure I include as much detail as possible. Thanks in advance for reading all of this and offering any thoughts and suggestions.
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Hey,
New member here.
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To Apple Discussions.
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http://discussions.apple.com/message.jspa?messageID=4459207#4459207
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K9A2 Platinum-Won't boot from optical drives

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QuadCore AMD Phenom Black Edition 9850, 2500 MHz (12.5 x 200) MSI K9A2 Platinum (MS-7376) OCZ Reaper HPC OCZ2RPR10662G 2 GB DDR2-800 DDR2 SDRAM ATI Radeon X1800 GTO (256 MB) WDC WD2500KS-00MJB0 (232 GB, IDE)WDC WD5000AAKS-00A7B0 (465 GB, IDE) Microsoft Windows xp SP 3 Cooler Master 650W+3.3V@28A,+5V@30A,+12V1@18A,+12V2@18A,[email protected], [email protected]

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Won't boot from USB Drive

I am trying to replace my internal drive. I got a WD Scorpio from OWC and formatted and installed OS 10.6. But when I boot from the drive I get the panic screen.
The drive otherwise behaves normally. I can see the files, etc.
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Please help! The OWC folks have sent me multiple drives and have really tried to get this working, but I have the same result each time. Anyone out there have a solution?
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Try prepping the drive this way:
Drive Preparation
1. Boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
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Satellite A300 won't boot from any device

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When I start it I see the splash screen and can enter the BIOS or Boot select.
I've tried setting boot priority to HDD & CD, and also chosen to boot from both with the Product Recovery CD in the drive.
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I hear a bit of CD activity and the light flashes a couple of times but then nothing.
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Could it be the graphics card on the system board?

Hi
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I think this is no matter if the issue would be related to mobo or GPU in both cases the motherboard needs to be replaced. But if you area able to access the BIOS then the mobo could be ok.
But generally speaking it sounds like serious hardware problem and I think its time for an notebook technician.
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Hi, yoshi -
I just have to be rush to get the cd in the drive and then to hit cmdshift+optdelete before it's too late...
You should also be able to use Startup Manager to choose the CD as the boot volume -
Article #HT1310 - Startup Manager: How to Select a Startup Volume
A feature not discussed in that article -
Once Startup Manager has loaded, if the CD is not in the drive you can press Command-. (Command-periodkey) to open the drive - this should work even if another disk is already in the drive. Insert the disk you want to use, close the tray, wait a few seconds for the disk to spin up and get recognized, then click the circular arrow icon on the left - this forces a rescan of the available drives, which should result in an icon of the new disk appearing in the array. Click it to select it and then click the straight arrow icon on the right (or press Return).

IBook Won't Boot From ANY Optical Disk - correct forum this time sorry.

My trusty old iBook circa mid 2005 is overdue for an overhaul but refuses to boot in Target disc mode or boot from any of my install disks, 10 or 10.3 or 10.4. When I choose the disk from Startup Disk it begins to reboot until the Apple screen comes up with some pixelly artifacts onscreen and it hangs. Holding the 'C' key down does nothing. Please help I need to wipe this baby clean and start from scratch.

Hey Craig,
Here's my pics of where the GPU sits from an earlier discussion:
"This is the position of the GPU on top. That bay right below is where the hard drive goes and that's it's connector lower right:
http://s291.photobucket.com/albums/ll306/spudnuty/?action=view&current=13312GPUt op.jpg
Here's a view with the heat sink in place and a ghost image of the GPU:
http://s291.photobucket.com/albums/ll306/spudnuty/?action=view&current=13312iBoo kGPUheatsink.jpg
The spot where I'd recommend applying pressure from underneath:
http://s291.photobucket.com/albums/ll306/spudnuty/?action=view&current=13312GPUu nderneath.jpg
and where that spot is on the lower shield:
http://s291.photobucket.com/albums/ll306/spudnuty/?action=view&current=133GPUBot tomshield.jpg
So to access that you'd take the lower case off. Go to ifixit for that.
If that solves your problem or makes it better it will run like that for a while. If it gets worse you'd need to reball it. $79 plus shipping one way in the States."
Richard
Message was edited by: spudnuty

G5 won't boot from any drive (internal or external)

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