I have an HP computer that we just bought. I want to setup for dual monitors. The computer came with a onboard video card, and we purchased a NVidia 8400 video card. The problem is when trying to setup up for dual montors the computer is only seeing one monitor (the pci e nvidia card). I went in the bios and changed the onboard card to the default video card but it does will not recoginise the other card. Both montiors work but I just can not seem to make them work together.