Hi i have a Motherboard with a 4x AGP graphics slot and i have purchased a Geforce 4 Ti 4200 graphics card and it is a 8x AGP card and i have put the card in and my computer will not run with it is that card not compatible with my motherboard or is it that i had an onboard video before this and i need to disable it?? As with the video card in my computer it will not start up at all and i have no screen on my video card or on the onboard video?? Any ideas on how to fix it?? Thanks.