the system boots, but we just get a 'no video signal' on the monitor. removed the video card and tried it with onboard video, but still no results. the video card card works with his previous setup though. tried breadboarding; we only recieved long continuous beeps when 2 sticks of ram were added.
Check the VGA Cable connector at the monitor side. It might have come loose when he 'slightly' upgraded his rig.
Both, the GPU and the IGP are not giving you a signal at the monitor end, chance of having blown both of them are rare, you most probably have a loose end some place.