Hi there! Last summer I bought an used top of the line Power Mac G5 Quad, with 2 G5 Dual 2.5Ghz CPUs, 7GB of RAM, 2 SATA HDDs and the powerful FX4500 graphics card. It even has an AirPort Extreme installed! While it's a powerful machine - for music and photo editing - the Mac is overheating a lot. And by a lot I mean that the computer freezes and turns on the red overheat light right after entering desktop. I've tried to run with just one CPU enabled on the Open Firmware, tried to reinstall OS X, tried to enter safe mode, cleaned the whole computer, nothing. I've successfully toke apart the LCS with the CPUs of and cleaned all the dust of the radiator grills. I've also read that many people have rebuilt their LCS and from what I know I have3 the worst of them all: the dual Delphi pump Cooligy LCS. I feel bad for having this amazing computer just stop in my garage while I use my 2009 iMac - with the low-end 9400M - to edit all my photos in Aperture, so I wanted to make this beast purr again.What can I can do to make it stop overheating and bring it back to life? Best regards, Leite.