I took out one of my other G5 Quads and this one is having boot issues. What it does is when i power it on sometimes I can get to the desktop and log in but after a few seconds the screen would get dark and a messages pops up saying " You need to restart your computer. Hold down the power button for several seconds or press the restart button." shortly after the message pops up the G5s fans max. I held the power button shut it off and unplugged it for a few minutes then powered back on and reset the PRAM by holding the power button till the G5 beeps but shortly after when trying to load OSX it would freeze and the fans would max. My guess is its a hardware issues like bad ram possibly. It has 16Gbs so all 8 slots are used. When I get back from my classes today ill try running it with less ram to see if a stick has gone bad. Any other Ideas what could be the issue? This quad hasn't been used in years and has been sitting in storage since about 2009 or so. It is also clean inside and out and has some of the factory clear plastic film on the inside of the aluminum cover. It looks like this G5 was hardly ever used it looks brand new but doesn't act it lol. Right before I headed out the door to leave this morning I just noticed The G5 has a random gigabit adapter in one of the PCIe slots that might also be causing some issues I'll have to take that out as well to see if that was the problem.