Power Mac G4 MDD Will not Boot

I have a dual 1.25. I had the screen come up and tell me you have to restart.
restarted computer and now it will not boot. I get a black screen, cannot boot from CD, CD lights up then turns off. All fans turn on, the start up chime, chimes. Mouse does not seem to work, no lights and neither does keyboard. reset pmu by pressing button on mother board. removed PRAM battery and replace after 30 seconds. There is a red led lit on mother board, close to the RAM. I have replaced video card, not fixed. I have reseated every board I can, including ram. I am at a total loss. i hold down option, nothing happens. Help..
I have a WD 1.5 TB with full operating system on it, plugged in via fire wire, and i cannot boot from that. I was downloading from an FTP when the force reboot happened.

Will try that next, have appointment at genius bar, just thought i would bounce it off some people here. I did disconnect all peripherals, and unplugged battery for 5 minutes. I did not replace PRAM battery, but would the mouse and keyboard not work because of PRAM>? Anyways, still trying. Thanks for the input, much appreciated.

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