Kernel Panic 10.2 Please Help Me!!!!!!

[3mors]

After having installed Jaguar, I rebooted as written on instructions.
After having rebooted, I read a message in several languages:

You need to restart your computer. Hold down the Power button for several seconds or press the Restart button.

I do as written and every time this message appears.
What can I do?
Please help me!!!!!!!!!!!!!!!!!!!!!

This is my configuration:
PowerMac G4 867MHz, 512MB Ram, GeForce4 Titanium

I can't return to Mac OS X 10.1 as I have 10.1.0 CD and the installation doesn't start with this video card (I sold the other one =( ).

HELP HELP HELP ME PLEASE.

[3mors]

I managed finally.

It's was a CD problem, I've used a bad backup copy.
After having burned a new backup copy, I managed to install Jaguar.

Thanx anyway.