problem with installing external VIDEO CARD

The motherboard appears to have onboard video because the monitor connector is available. However, the manual does not identify it but states to install an AGP card.

I am not getting any video. I hear everything booting up, including the hard drive spinning and clicking, the CPU fan is spinning and the CDROM light is lit.

I tried the old AGP card, but the manual mentions about using one with the proper voltage, which could be the problem.

There are no jumpers to activate either onboard or AGP video.
Could it be the wrong CPU?

HI,
try AGP CARD on another motherboard

connect your RAM properly.
Also, make sure that your CPU is also properly connected.
Be sure that all power connectors are all properly connected.
moniter wire should properly connected.