Hi Loren, long time no hear... the FCP key guide was classic. Anyhow - had it happen the other day to an Early 2008 - the only solution was to unplug, then remove the PRAM battery. Rebooted fine after that. Sometimes, when they die, they die dirty, and no amount of PRAM resetting will fix it... but it initially felt like a dead power supply. Thankfully, it wasn't.
Good to hear from you!
Well, I carted the tower back into my local AACC-- they can try that strategy, among others, on my very last day of AppleCare!
What upset me was, a seasoned tech there telling me he strongly suspects third party PCIe cards. And the spooky thing is, the first go round of no-startup occurred not long after installing the Intensity Pro card!
So now I'm worried... I know BMG works fairly closely with Apple and I need that card when clients are in the room- works great via HDMI. Maybe the tech was just cranky, or maybe he's really correlated something troubling over many many repairs, dunno.
Thanks for your comments on the KeyGuide™. BTW, the FCPX KeyGuide is just as awesome... btu I have to update the website in so many ways. :-(