I just built a new system with asus a8v deluxe, amd 3700, 1 gig of corsair ram, 200 gig hd, dvd-burner, dvd drive, ati 9550 graphics card, when i go to start it up, i get no signal to my moniter, i've gone over all my connections, and the ati box says it's compatible with amd athlon, i have no idea