No video?

Try the video card in the other slot, if it's
not closer to the board edge where the power
supply plugs into the MOBO. There's a chance
the video card burned a trace on the MOBO.
If it sounds like it boots okay, the power
supply sounds okay. Are there jumpers on the
MOBO for the onboard video?? Also reset the
BIOS and hold F8 on power up until it beeps.

Disable the onboard video in BIOS.
Set primary video to AGP in BIOS.
The problem is, you need video for this.... so try to reset the BIOS. If not working, you must replace the Motherboard. (and from now try to use Motherboard with no video onboard)

First thing [b]Don?t Panic[/b]

You may not have a computer problem at all try the monitor on a different computer I had this happen once to my test monitor and I wasted the better part of a day trying to fix the computer until I tested the monitor on a different computer and found that it was faulty. Bit of a nuisance when you have what you consider a [b]Known Good Item[/b] that is faulty.

If the monitor works A OK you?ll then need to test the Video Card in a Different computer to see if it?s working correctly if it isn?t then you know that you have a bad Video Card and if it is and still fails to work in the original computer you know that the M?Board has died which is a common occurrence with those all in 1 M?Boards.

I try to avoid them at all costs even on Server Boards as I simply don?t trust them one little bit and you take a massive performance hit by using the CPU as a CPU & GPU and losing some system RAM for Video RAM as it?s much slower and you get worse video.

Col