I accidentally unplugged my iSight from my G4 mini while comp & iSight was on. I quickly replugged FireWire but computer just turned off. I tried turning back on, but nothing happens. No chime, no spin. I tried resetting PMU by unplugging everything, plugging in power supply while holding power button, then letting go and pushing power button again. Still nothing. I also tried different outlets. Is there anything else I can do or do i have to take it in to apple? I can't believe one unplugged cable could fry entire machine ! Help me please!!!