.are you sure a 400 fsb cpu works with a 300 fsb supported on the mobo? It's an AMD 2900+ with cheap chaintech mobo, both brand new
Now I see that number, there is no 300MHz Chaintech motherboard, DDR or otherwise (ill assume that was a typo for 333)
I remember those daysSoyo with 430TX chipset, this here baby kicked some serious ass back in her days.
I know that was simply illustrating that the setup would work otherwise it wouldnt be set as suchI didn't OC it, I bought it from tigerdirect and put it in the board.
Try resetting the memory and video card