How to Use the Onboard VGA WITH a PCI-E Display Adapter

biosgraphics cardintegrated-graphicsmotherboardmultiple-monitors

I have this motherboard in my machine.

I have installed an NVIDIA GeForce 8400 GS in the PCI-e x16 slot.

I have two monitors connected to the GeForce, and they work perfectly. I have connected a third monitor to the onboard display adapter, but the third monitor doesn't function at all. Windows Device Manager doesn't detect the onboard display adapter, pointing to the motherboard/BIOS disabling the onboard display adapter while an additional display adapter is installed in the PCI-e slot.

Is it possible to get around this issue, by customizing the BIOS configuration or installing a third-party BIOS image?

Best Answer

Generally speaking once a PCI-E adapter is detected, the on-board graphics are disabled. As this motherboard is generally integrated into HP systems, I can't see the BIOS offering this functionality as HP tend to pare down the available options to the bare essentials.

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