Cannot boot from Superdrives on my Mac Pro!!

Hello,
So I tried to boot last night from my Disk Warrior CD in order to do a maintenance check.
I hold C key but in vain after a couple of minutes I get the black screen/freeze with the message to restart holding power button.
Today, I tried to install Leopard on my external firewire drive and when the Mac restarted I got the same result.......freeze.
I tried both Superdrives.......same result, verified connections etc..... no dice.
I run the latest Leopard 10.5.3 in a first edition Mac Pro Dual 2.66 with 13GB RAM and 3 hard drives.
What bugs me is the fact that while holding or not the C key, after a couple of minuted I hear the ''click'' that you hear when you shut down the Mac Pro. It is like the Mac is shutting off but still runs for a few minutes before giving me the black screen.
This means I cannot boot anything anymore on my Mac Pro.
Please help me, any deas, what should I try doing.
The 2 Superdrives are Pioneer 111D and 112D......one is master the other on cable select.
Thank you.

Flocarino wrote:
Another Surprise: I tried to boot from the original Mac Pro Install Discs, result: it crashes even faster.
Well that's a BUMMER You've got a hardware problem somewhere and it's time for 'Hit or Miss' Tactics to find it
First things First. Follow Theses Steps ...
Step 1) Can you boot from the hard drive with both 'Superdrives' plug in and empty?
If your answer is NO Goto Step 7.
Step 2) Check the 'Superdrives' from the 'System Profiler' -> 'Hardware' -> 'ATA Bus'. Does it list BOTH Drives?
If your answer is NO Goto Step 7.
Step 3) Is the TOP drive 'Unit Number: 0' (Zero) and the BOTTOM drive 'Unit Number: 1'.
If your answer is NO Goto Step 7.
Step 4) Can you 'Mount' a CD/DVD to the 'Desktop' from both drives?
If your answer is NO Goto Step 7.
Step 5) Can you 'REBOOT' the 'Install DVD' from the 'Desktop'?
If your answer is NO Goto Step 7.
Step 6) Happy Days Are Here Again. Stop Here.
Step 7) 'DON'T PANIC!
Step 8) Open case and remove the 'Superdrive' bay. The 'Original' drive should be in the TOP bay with the END OF the 'Ribbon' cable plugged in to it. This 'Ribbon' cable and the 'Superdrive' should have a 'NOTCH' and can ONLY be plugged in a certain way. Set the 'Drive Select' jumper to 'Master'. Unplug the 'Ribbon' and 'Power' cable from the 'BOTTOM Superdrive'.
Step 9) Repeat Steps 1 thru 5 and if you make it to Step 6, Repeat Step 8 using the 'BOTTOM Superdrive'.
Step 10) Hmm, both 'Superdrives' WORK by themselves but NOT together So connect the TOP drive back as in Step 8 and connect the BOTTOM drive but change the BOTTOM drive's 'Jumper' to 'Slave'. Leave the TOP drive set to 'Master'.
Step 11) Repeat Steps 1 thru 5 and if you DO NOT make it to Step 6 then I'll need more information from your 'Console Error Logs'.
End Of Steps ............................................................................... .................................
Not relevant to you problem BUT did you change your VIDEO CARD?
Buzz
<Edited by Moderator>

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