Digital Audio - What did I kill?

I installed an OWC 1 ghz processor and my hard drive died. Got a new hard drive, it was no good. Got a new hard drive, formatted it, installed OSX, all good. Next day, nothing past the chime, it shut off. I started from my CD, the hard drive showed up in Disk Utility, but as soon as I clicked on it, I got the dreaded black restart screen. I gave up and ordered another computer (Quicksilver 2002), but I'd still like to know what died on the DA.
I reset the PMU when I should have, followed directions from OWC tech support, etc., set jumpers, all that stuff. Is it a circuit board?

I unplugged everything before I opened the case, every time. The DA had the original video card.
The processor seemed to be working fine, fans, everything. The story with the hard drive went on for over a week before I got a working one. I struggled with the first new one for several days before tech support said it was no good, so I returned it and they sent a new one. I set it for master, as tech support told me, reset PMU, all that good stuff. It formatted and installed OSX and OS9 just fine, then the next day, oh boy!

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    Message was edited by: thewk

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    Message was edited by: thewk

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