Kernal Panic when booting from AC Tech Tool disc

Question

Okay, here's one to stump y'all:
I have talked to Apple Support, brought the machine to the best service center (Springboard Media in Philly) and no solution yet. Here's what happens:
Whenever I try to boot up from the Tech Tools Deluxe disc that came with my Apple Care Plan, Tech Tools Pro or Disk Warrior, the G5 panics about two seconds after I get to the grey apple screen. This happens every time. Now the interesting thing is that this did not happen when Springboard tried the same thing. Could this be a hardware issue that just wasn't found? I was assured that Springboard ran extensive hardware and software tests and came up with nothing.
I am at a loss. When I called Apple about this initially, the dude I spoke with decided that it must have been the media and promptly sent me a replacement Tech Tools Deluxe disc. Of course this did nothing. I am hoping someone on the forums will have some insight on this...
Cheers,
Matt
MDD Dual 867 | G5 Quad 2.5   Mac OS X (10.4.8)   Sam Smith's Oatmeal Stout, Maker's Mark bourbon and a whole lotta RAM

Answer 1

Hi- Thanks for the comments.
Yes, non-Apple RAM is installed. I had faulty RAM and found it and it was replaced by a very reputable third party company. I should have mentioned all the steps I have gone through (prior to bringing it into Springboard):
First noticed something was wrong when the machine was just shutting off w/o warning (ie like I pulled the plug). This happened a few times over the first two months of owning the machine, but seemed to progress (the G5 is only 4 months old). So that's when I initially tried booting from the TTD and TTP discs, to no avail. Then I went on to Apple Hardware test, which I could boot to fine w/o any problems. Ran the test in Loop Mode. The test would pass the everything up to the memory and then the machine would shut down. This happened quite a few times, so I know it wasn't a fluke. Finally got the AH test to confirm that one of my 2GB DIMMs was shot. That's when I sent it back, and continued testing with the stock 512MB (ugh) with no problems. However, even with the stock 512 in the machine failed to boot from TTD or TTP or DiskWarrior. Which made me think it was the optical drive. (And consequently when I started thinking this was above my head.)
So called Apple, and we reset the PRAM, the NVRAM, unplugged the machine for two minutes etc. Standard reading from a script Tier One. All to no avail.
Got the RAM back from the 3rd party (OWC), called them to confirm that the RAM I had sent back was faulty and that they had personally tested the DIMMs they sent back to me, which they confirmed had passed AH test. I then installed the 4GB, ran AH again - no problems. But, the booting from a CD/DVD problem still persisted.
I really doubt whether it is the OWC RAM at this point, as I successfully tested it, as did Springboard. I must reiterate that Springboard had no problems booting from TTD, TTP, etc.
I wish I could get a good photo of the KP when I boot from the TTD, cos the system profiler doesn't record it in the logs.
I think this covers pretty much everything I have done so far... I look forward to your responses.
And thanks for the luck!
MDD Dual 867 | G5 Quad 2.5 Mac OS X (10.4.8) Sam Smith's Oatmeal Stout, Maker's Mark bourbon and a whole lotta RAM