The PCI Express slot on your motherboard allows you to connect video cards using the PCIe bus standard. Most motherboard models also feature an integrated graphics chipset that allows you to run your computer without having to install a PCIe video card. If your computer uses an integrated graphics chipset as its primary display adapter, you must first enable the PCI Express slot from the BIOS menu before switching to a PCIe video card.
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1.
Open the BIOS menu. Pressing the “F2” or the “Del” key during computer startup usually takes you to the BIOS menu.
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Select the “Advanced” tab using the left/right arrow keys.
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Select the “Video Configuration” option using the "Up/Down" arrow keys. Certain motherboard models list this option as “First Display Device” or “Primary Display Adapter."
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4.
Select the “PCI-Express Graphics" option and press “Enter.”
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5.
Press "F10" to save the new settings. You can now use the PCI Express card slot to install a PCIe video card.
