The display never turns on or gray, just no signal. The Mac starts with a Chime onetime it did two. I have tried 2 different displays connected to each of the different DVI ports. Today I went to start it and no video period, and the USB / the system appeared to be unresponsive wired mouse and keyboard and the usb hub had no sign of power. I am running a Mac Pro 2008 as of the last week I have been shutting down the machine instead of sleeping it due to the 10.8.2 sleep bug that had been floating around.
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