I'm scratching my head over this one. I rebuilt my Cube with used parts a few years ago because the original owner spilled coffee in it. Everything was fine, but I went to fire it up a few months back and it would get to the Starting Mac OS X... screen then shut down. I tried it again today (but replaced the ADC display I was using with a VGA), and it seemed to be running fine until everything cut out. What's even weirder is the LED stays on for a quick second or two before going out after the display has stopped displaying video. Every time I try to boot it after that, the run time gets shorter and shorter to the point where it won't even post and the LED goes crazy blinking. Should I look at replacing the PSU or does it sound like something internal (VRM?)?