Welcome to the board....
I guess I would try a couple of things. Not sure if you have a lot of music and/or would mind re-initializing the hard drive...But here are some ideas...
1) See if you can boot from the original CD. If successful, you can try to update the software. That would leave your music intact if it works.
2) If #1 doesn't give you any luck, I would try to install a new hard drive and see if you can initiaize that from the boot CD. Hopefully you didn't fry anything on the motherboard and it's just a hard drive issue...
3) If that doesn't work, we'll have to put our heads together and see what other ideas we can come up with....
Randy
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Happy owner of 2 Centrals, 2 Empegs Mk2a 160GB, 1 Empeg Mk2a 60 GB, a Rio Riot, 4 Rio Receivers, and two 1GB iPod Shuffles...