Well, I did all that and now the machine will not even boot, it chimes, no disk activity beyond an initial short burst, blank screen. I've removed and reseated the processor card, reseated the PCI cards, dismantled the machine to check that Ram is all seated. There's another MLB here that I'll try tomorrow; sick of the damn thing tonight. That computer has always been a little flakey ever since I got it. If I thought the G4 card would work in a Kansas MB it would go in the 8600/300.