Hello, I recently bought a G5 dual 2.0ghz but with some booting issues. When i press the power button the light turns on and i can hear the fans spin up. They ramp up for a second and then return to normal. Nothing is displayed on screen. I thought it was some issue with the vga as i could see some physical damage on the connector. I bought a used one (5200) and the problem is the same. Any suggestions on what could be the problem?