I came home yesterday to find my G5 powermac's fans spinning at full blast - much more than I ever expected they could. It sounded like a jet readying for take off. The monitor was on, but no display. I powered it down (holding the power button in) and then turned it back on. It began powering on, made the loud chime sound as usual, keyboard lights never came on, and no display on the monitor. After waiting 15 or so more seconds, the fans began roaring again Tried a second time, same deal. Guess I'll have to take it in. All I hope is that it is nothing with my hard drive *crosses fingers.* Because the keyboard lights are not initalizing as usual, and the monitor is not being actived, I'm assuming it is processor/motherboard related, as it shows signs of system failure before the drive is really utilized *crosses fingers again*.