On Monday, December 30, 2002, at 04:49 PM, Jay Friedland wrote: > 2) After going back to only the single board of original memory, the > iMac had the question mark file on opening. Try resetting the CUDA switch. It's on the motherboard near to the battery. Hold it in for 15 seconds. > > After trying Disk Warrior and a bootable 9.1 CD, neither booted the > computer. Could be you didn't connect the CD drive cables fully. It's tricky on the Rev D iMac. > Anyway to tell what the original problem could be with the memory > failing to start (PC100 and correct fit)? How much ram did you start out with ? Seating ram in those iMacs is tricky as well. It seems like it is in but may actually be in backwards or not fully seated. goucho