That motherboard doesn't have any integrated graphics.
The present card may be the problem. Have a look at page 1 of the
manual (10 Meg download!).
Due to it's age, I'm presuming your video card is an AGP 2x or 2x/4x card.
The AGP slot has 3 notches, 2x, 4x and 8x, but only supports 4x/8x (1.5V) cards as powered by the 4x connectors.
Some 2x/4x cards run on a 5V supply provided by the 2x connector and, if used, will stop the motherboard from working. Others, such as the Diamond Viper, have a jumper on the video card allowing it to be switched between 2x (5V) and 4x (1.5V).
Can you confirm the AGP rating of your video card, does the manual state the voltage, are there any jumpers on it?
(If it's a Gainward, from what I can find of their manuals, they require 5V.)