i have a p4pe-x asus motherboard, which it's not starting. i change 3 video cards, but still not starting. i supposed te motherboard is dead, but i tryed to start the system with a S3 trio 3d/2x video card. surprise, the computer starts normally. probably the agp slot is malfunctioning. if i made an bios update, is there any posiblity to make the agp slot to work?