Imac g5 won't boot from any Cd/DVD

Hey,
New member here.
I have an Imac 20" 1.8 Ghz PowerPC G5, running Mac OS X 10.4.9.
My problem is my computer won't boot from from any DVD or Cd, not the original system disc (10.3.5), not from a newer Imac system disc (10.4.7), not from a Disc Warrior 3.03 disc.
What I get from the Disc Warrior disc is a gray screen with white letters backed in black, saying
"panic (cpu 0 caller 0xooze49do): unable to find driver for this platform: "powermac8,1""
Plus other stuff written underneath it, looking like a log of how far it went.
When I try to boot from the original 10.3.5 DVD, it does boot up but doesn't work after that - it gets to the language to choose and stops.
When I try to boot from the 10.4.7 DVD, I get the gray screen, same results as the Disc Warrior cd.
I even copied my system folder (10.4.9) onto a firwire drive and start from that, but I get the gray screen again.
I zapped the pram, and reset the Open Firmware - still no dice.
Can anybody shed some light on this?!?
Many thanks!
Rufmanj

To Apple Discussions.
Please check out the following thread which the original posted had the same error you had.
http://discussions.apple.com/message.jspa?messageID=4459207#4459207
You may find some helpful troubleshooting solutions in the above thread.
Make absolutly sure you are using the "DVDs" that originally came with the computer.
Also, see Knowledge Base Article; http://docs.info.apple.com/article.html?artnum=106805 Mac OS X: "Broken folder" icon, prohibitory sign, or kernel panic when computer starts

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beatle20359 wrote:
Hi Jeff,
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Message was edited by: spudnuty

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