Alright, I know I'm new to the forum but I've come to the conclusion that I have no one else to turn to. Here's the system stats for reference: G3 B&W 400mhz 256mb RAM 16mb ATI Radeon (original card) 128mb ATI Radeon 9200 PCI original 6gig hard drive original dvd-rom running OS X Panther Here's the situation: I've got a blue and white G3 tower that I recently purchased a 1ghz PowerLogix ZIF upgrade for. I followed the instructions for the processor installation and when it came time to restart the G3, I heard the wonderful chime sound that I now miss, but nothing came up. Just a black screen and an orange light on the monitor. So I switch it out for the original 400mhz processor so I can restart and diagnose the issue, but now the computer does nothing. It powers up but there's no chime, no nothing. I've tried everything imagineable but nothing seems to work. I tried resetting PRAM, etc. Nothing. I'm not exactly a hardware whiz, by the way. I'm basically at a loss. The system acts like nothing but the power on it works. I'm getting the impression that the motherboard is fried or something. I noticed that the light on the motherboard next to the processor constantly flashes when the original processor is in there, but when the ZIF upgrade was in, it was off. Obviously I haven't the slightest clue as to what it represents and I haven't been able to find a proper diagram to show me. Any help is greatly appreciated. PowerLogix tech support is extremely slow and I don't know what else to do.