Cannot boot from leopard disc anymore(or image of), everything else fine

I am posting this from the osx forum because this is now obviously a hardware problem.
http://discussions.apple.com/thread.jspa?threadID=1524924&tstart=60
In addition I have swapped the ram chips around and tested them one at a time and made an image of the install disc on a firewire drive and tried to boot.....I get the same kernel panic.
I called apple care and they seems to think it might be a logic board or ram problem. I have some owc ram and crucial. I can just see the "genius bar" saying that that is the problem because it is not apple branded...blah..blah.....and not really get to the heart of the problem.
I have recently added an 8800gt which works fine..... any chance of that being the problem?
Thanks for any extra help!!

Try with two dimms only at a time.
Try with Apple only; Crucial only; OWC only.
Make sure to reset PRAM/NVRAM after each change to clean NVRAM.
run AHT if you have not yet. It is good at finding defective RAM actually, but not for the more difficult 'soft' errors that do occur.
In the kern_excp entries in the panic log it could point to a repeating bad address.
Three vendors RAM may not get along, or one DIMM could be problem; or even one of the Risers.

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    I was working on an ibook and messing with it in firewire mode and was going to install leopard on it that way from my macpro. (just letting you know the context)
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    I get the "You need to hold the power button panic message" everytime I do this. I unplugged external devices and tried this also and it has the same problem.
    I cannot boot from the dvd anymore. If I eject the disc, osx loads normally.
    Any ideas what I can do? (I have tried safe boot, pram clearing and hold option on boot to check options)
    Here is the kernel panic when it finally loads into osx.
    here is the kernel panic log when it reboots into OSX
    Sat May 17 14:13:09 2008
    panic(cpu 1 caller 0x001A7BED): Kernel trap at 0x894ec373, type 14=page fault, registers:
    CR0: 0x8001003b, CR2: 0x00000018, CR3: 0x00df8000, CR4: 0x00000660
    EAX: 0x00000000, EBX: 0x00000000, ECX: 0x00000000, EDX: 0x0a5a1004
    CR2: 0x00000018, EBP: 0x817c3bc8, ESI: 0x0a4c5c00, EDI: 0x0a4c5c00
    EFL: 0x00010246, EIP: 0x894ec373, CS: 0x00000008, DS: 0x0a3c0010
    Error code: 0x00000000
    Backtrace, Format - Frame : Return Address (4 potential args on stack)
    0x817c39d8 : 0x12b0e1 (0x4555b4 0x817c3a0c 0x133238 0x0)
    0x817c3a28 : 0x1a7bed (0x45e568 0x894ec373 0xe 0x45dd24)
    0x817c3b08 : 0x19e517 (0x817c3b20 0xa83c980 0x817c3bc8 0x894ec373)
    0x817c3b18 : 0x894ec373 (0xe 0x48 0x10 0x10)
    0x817c3bc8 : 0x894db540 (0x0 0xa83c980 0xa4c5c00 0x1)
    0x817c3c08 : 0x78d45139 (0xa4c5c00 0x1 0x0 0x13)
    0x817c3c68 : 0x78d3e940 (0xa4c5c00 0x2407 0x817c3d2c 0xa4c5c00)
    0x817c3c98 : 0x40c515 (0xa4c5c00 0xacd8130 0xacd8130 0x0)
    0x817c3ce8 : 0x437535 (0xa4c5c00 0xacd8130 0xacd8130 0x0)
    0x817c3d48 : 0x18c8aa (0xa4c5c00 0xacd8130 0x0 0x0)
    0x817c3db8 : 0x12d165 (0xa525c78 0xaa76b90 0x817c3df8 0x11ee04)
    0x817c3df8 : 0x126247 (0xa525c00 0xa2f9254 0xaad84b0 0x0)
    0x817c3f08 : 0x196afc (0x817c3f44 0x0 0x0 0x0)
    0x817c3fc8 : 0x19eb34 (0xab382a0 0x0 0x1a10b5 0xa63f208)
    No mapping exists for frame pointer
    Backtrace terminated-invalid frame pointer 0xbffff378
    Kernel loadable modules in backtrace (with dependencies):
    com.apple.NVDAResman(5.1.6)@0x894d8000->0x89704fff
    dependency: com.apple.iokit.IONDRVSupport(1.5)@0x78cc5000
    dependency: com.apple.iokit.IOPCIFamily(2.4)@0x78ac0000
    dependency: com.apple.iokit.IOGraphicsFamily(1.5)@0x78d36000
    com.apple.iokit.IOGraphicsFamily(1.5)@0x78d36000->0x78d51fff
    dependency: com.apple.iokit.IOPCIFamily(2.4)@0x78ac0000
    BSD process name corresponding to current thread: WindowServer
    Mac OS version:
    9A581
    Kernel version:
    Darwin Kernel Version 9.0.0: Tue Oct 9 21:35:55 PDT 2007; root:xnu-1228~1/RELEASE_I386
    System model name: MacPro1,1 (Mac-F4208DC8)

    I really appreciate everyone's help.
    I am certainly not above taking the machine in but I will say this.....
    I have been building and working on PC's for 15-20 years. I have never once used or had the need for a repair shop. It is my hobby. I recently switched to osx to give the mac a try and I love it.
    I will say that vista/xp has four times as many problems but at least i can fix whatever comes my way hardware or software.
    Any more ideas how to settle this without making my first trip to the repair shop ever?...
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  • Cannot boot from Leopard Install DVD

    Now that I know I have to archive and install (based on a previous post), I'm trying to boot off of my Leopard Install DVD. I put it in the drive when starting up, hold down "C", and nothing happens. I end up booting from the hard drive and getting stuck again. I reboot the computer, try again, and again, nothing. Finally, I pressed "option" on boot-up, got the boot menu, the DVD appeared after a moment, and I clicked on it. I could hear the drive spin-up, then nothing happened. It went to the hard drive again and got stuck in its reboot loop.
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    In fact, I have but I first saw yours.
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    Message was edited by: Hellstan

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    http://discussions.apple.com/thread.jspa?messageID=3378317
    http://discussions.apple.com/thread.jspa?messageID=3298926
    http://discussions.apple.com/thread.jspa?messageID=3469463
    http://discussions.apple.com/thread.jspa?messageID=3394741
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    i actually had this same issue and called and talked to tech support about it, they transferred me to a product specialist and told me the reason it would do this is the install disk is most likely not the original one that came with the computer
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