The DP 450 is booting. The power switch is bad, so I have to boot it with a old USB keyboard that has a power button. The DA still won't boot, but I want to try to bypass the power button to see if it has the same issue. I tried the keyboard already, but IIRC, the later G4's couldn't be powered on via USB anymore because it didn't meet the USB standard. Is this one of them? How can one bypass the power button on this machine? When I plug the PS in, I can hear it click and whatnot just like the working one does, so it gives me hope. Is there any way to bench test the PS? Take it out and short 2 pins to get it to power up?