Hello all, I have an (old now) 2.5 Quad Core PowerPC where all of a sudden the display stopped working. Prior to this happening though, the monitor would periodically shut off and go into "Sleep Mode" then I would hit the space bar and it would come back, until finally the monitor just stopped coming on. I thought it was the video card so I replaced that, but no change. I do notice that NO power is getting to the monitor, meaning the keyboard and mouse via 23" cinema display are not receiving power. I also tried another monitor (VGA) with the system and it did not work either. Any ideas as to what is causing this. I really don't want to retire this beast yet! Any help would be much appreciated! Thank you!