Humm, still having problems here with this! Sometimes it starts, sometimes it does not. I change the HD for a 20 Gig one.
I put back the memory sticks, and it booted once with the memory in. So maybe the memory is not bad, but not sure. That time, when it happen, I booted up with the OS 8.0 CD and started installing on a partition on the HD. In about 1/3rd of the process, it froze. When I tried booting it again, black screen...
But that one time, when it was OK, I reseted the PRAM with the keyboard. I heard the starting chime a few times (2-3) before I let it continue. Then I realized that all other times when I tried reset the PRAM, it was not doing the chime more than once, when power comes on.
I hope that someone could be able to give me some other research point to continue investigating this issue...
Thanks to all!