So over the weekend I bought a Umax S900 with a sonnet G4 upgrade in it. The guy said it worked. I tried to boot it up and I got no chime on the S900 but I did get video out of the ATI card.

I then put a Sonnet G3 300 out of my 8500 in the S900 and it booted just fine. I put the G4 into the 8500 - same result - no chime.

I figure i need to check and see if either motherboard has any L2 cache installed on them and remove that as a troubleshooting measure, and maybe reset the CUDA switch. Anyone else have any ideas on how to get this G4 upgrade running again?