So last week I won a PM G5 Quad on eBay for $25. It was 'broken' and the seller didn't provide a whole lot of detail besides "doesn't work". Oh well, only $25 so whatever. I just opened it today and started to work on it. First, the whole thing was loaded with PC-3200 RAM...so removed all of that. The only RAM that works is a 2GB (1x1) set of PC2-5300 RAM. No flashing RAM indicators, but the LED #7 is lit, which according to the service manual is a CPU hang. I took apart the LC unit and everything looks really clean. Minimal dust, no leaking or anything. I put the CPUs back and reapplied thermal paste. They are seated perfectly but I still get the #7 warning, however I get the chime. The service manual says "replaced processors/logic board", but I don't know what processor is bad (let alone how to test). The thing is the computer boots fine! It displays video and loads but eventually the prohibited sign appears and nothing happens. Unfortunately I don't have any of my install disks, extra drives, extra RAM or my copies of ASD to test. I booted into verbose and get the following: AppleSMU -- shutdown cause = 3 "Something about not being able to find boot device" Anybody have any bright ideas here? Or am I SOL?