I dont know what model G5 you have however the linked doc spans many models over several years of PMG5 production. Ifixit as well as youtube have step by step how-to tutorials on how to disassemble & reassemble PMG5s (and the tools you'll need for the job).įrom here on out, I would look at a service manual for trouble shooting your machine. Generally speaking, when you take the computer apart, double check that all of your power cabling is correctly and firmly reattached. I dont recall which version you need for your PMG5 but folks here know and can chime in. Until then, you'll get full blast jet engine fans ramping up at boot. often its fans will need to be recalibrated using the Apple Service Disk. Ramped up fans - When a PMG5 cpus are taken apart and reassembled for cleaning, repasting, replacement etc. Either way, until you retrieve it, I've used a wood toothpick stuck through the hole (small zip ties too) to help support/stabilize various cards until I sourced replacement screws. Definitely try and find another screw that will fit or go fishing for the screw you lost in your case. GPU screw - In regards to the GPU 'screw', I assume this is the screw that attaches the card to the case.

This could certainly cause problems with CPU temperature and premature shutdown if the heatsink is not seated properly causing the cpu to over heat. No boot/CPU hardware - It is certainly best practice to get the proper screw drivers to correctly reinstall all of the CPU heatsink hardware - they are there for a reason (by design) and are not optional. That is how the PSU death of my Dual CPU 2Ghz PMG5 presented itself. PSU power - When you plug the power cord into the psu at the back of the PMG5 case, do you hear a 'click'? If there is no 'click' sound, then the PSU has most likely failed and would need to be replaced.

Disassemble power mac g5 case