Earlier today I was fixing my old PC and I had to edit the boot sequence via BIOS to instal windows. Without thinking I pressed F5 to reset every setting to default, fix the sequence and reboot the computer. The problem now is that it won't detect the monitor. I suspect that the motherboard's default video setting is either onboard or agp and I need PCI-E. Reseting BIOS to default wont fix it. I need a way to put the video mode back to PCI-E mode. My motherboard is an Asus m2n-e.