Well I built a new system for christmas(see sig) and when I try to put my fx5200 in it will not boot, post, beep, nothing. It turns on but nothing is on the screen. Then I put my mx440 pci in and it works fine. I thought maybe it wasn't seeted properly. I seated it 10 times. So then I take my computer to my friends house and throw in his sis 315 agp and it boots. Im wondering if my board does not like 8x??? Any help is appreciated because I need it quick.