Well, I'll start by saying that my very first Mac that I ever so enjoyably owned was a B&W Yosemite G3 that my brother who owns Avatar Labs (did animation work for Harry Potter and The Matrix - Macs out the wazoo) bought and set up for me back in the day with OS X 10.3 Panther. Loved it. Fast forward and I've been through G5's, Intel Mac Minis, and now my main machine is a PowerBook G4 1.67Ghz laptop that runs great for what I need. So I've been really digging the thought of getting this dual 1Ghz G4 Quicksilver I acquired up and running. HERE'S THE PROBLEM - I bought it with the knowledge that it was "for parts" - but the seemingly honest and respectable seller and fellow Mac enthusiast said that it chimed last time he turned it on. It does NOT chime and the power button only remains lit when it's pushed in. The hard drive does not spin up when the ATA cable is plugged in, but WILL SPIN UP when the PATA/ATA cable is UNPLUGGED from the machine - as if the motherboard/Mac is telling the HDD to remain still and NOT spin up. I've already tried resetting the PRAM, bought a new $15-20 battery (I'm next to positive it's the right one), tried reseating the memory in different slots, reseating the GPU, unplugging the HDD and DVD drive and plugging in one and then just the other. No results. I've read of other people encountering this situation. Some seemed to have resolved it with a CUDA reset and new battery. Others a new power supply and one or two by RESEATING THE PROCESSORS. Yikes. I've completely rebuilt and reseated a G5 machine's processor but I'm not familiar with the G4 socket and all that, should be doable, but would like to hear thoughts first. It's in incredibly good condition and is a nice dual 1 Ghz machine that I'd like to use as my daily driver. tl;dr - read below "HERE'S THE PROBLEM"