My motherboard is M3a78-cm and the new card I installed is the GT 520 from NVIDIA. I tried looking around the BIOS settings but I was only able to toggle between having the DisplayPort (internal gfx) on or off. Is this at all possible with my motherboard? Could I download some BIOS update to give me the option to enable both, or is there a way to dig deeper into my computer to make this work? I want to run two monitors, and I know I can do this with the new card alone, but I want to be able to run 3 at some point in the future.
Taken together, what it means is that multiple video adapters are supported, but may not work depending on the particular configuration that you are using. Specifically, using the DisplayPort may prevent you from also using a PCIex16 card (which the GT 520 is), so disable the DisplayPort if you are not actually using it.
Check that the Primary Display * settings are set to the defaults because they best support what you want. However, you may want to experiment with different settings for Primary Display Controller, particularly the