Kid's PC died with no video signal out. Bought a GPU, thinking to bypass the integrated graphics. Also, a new 500W PSU and add'l 8mb RAM. There is no signal out from the GPU. No VGA from the onboard. No HDMI, naturally. I've cleared CMOS (battery pull and moving the jumper). Re-seated all components many times. Two short beeps on POST, with or without RAM installed. There is talk about disabling the onboard and enabling the GPU, and adding drivers. How would I do that with no video at all? Or, is this just a bad motherboard and I need to throw more $$ at it?