Install the PCIe graphics card and the PCI graphics card. Connect monitor to PCIe card.
Boot into the BIOS. Find the section that covers the graphics card "order of search". Change it to PCI. Shutdown the box.
Move monitor cable to PCI card. Boot. If everything shows up correctly, remove the PCIe card.
You can't boot non-enterprise/non-server motherboards without some kind of video console.
|