Solved how to configure a PCI x16 in bios

October 19, 2011 at 11:43:48
Specs: Windows 7
I have installed a ATI Readon PCI x16 before I was using on board connection
How to configure in Bios?

See More: how to configure a PCI x16 in bios

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October 19, 2011 at 21:32:43
✔ Best Answer
Some BIOS' are set to autodetect, others may need to be reset. The best setting if your BIOS offers it is "use onboard graphics unless PCIe card is detected" since removing the card will automatically return to onboard graphics, making diagnosing problems easier.

You have to be a little bit crazy to keep you from going insane.

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October 19, 2011 at 22:32:58
Tell us the make and model of your brand name system, or if you have a generic desktop system, the make and model of the mboard.

The specific model of a brand name system is often shown on a label on the outside of the case somewhere, or it can often be determined by going to the brand name's web site and loading a program they have available, if Windows is still working, on the subject computer.

If it's a Dell computer...
Go here for how to find the Service tag "number":

Tell us what it is.

If it's a HP or Compaq computer.....
Go here:
Scroll down a bit.
Look for the similar label on the outside of your computer.
Quote the specific model number - that's at the end of the first line.
Quote the Product number - that's on the third line.

The model, sometimes the make, of a mboard in a generic desktop system is usually printed on the mboard's surface in obvious larger characters, often between the slots.

In most cases, installing a PCI-E X16 video card causes the bios to automatically disable the onboard video and to stop sharing the ram installed in the mboard with the onboard video. In that situation, when a card is installed in the PCI-E X16 slot, and you then connect a monitor to the port for onboard video it PRODUCES NO VIDEO.

In that case any settings in the bios for Primary video, or Intialize Video first, or similar, are only to inform the operating system which type of video card you have installed - there is no setting in the bios that can actually disable the onboard video - that should be set to PCI-E X16 or similar so that the operating system - Windows - can support the video card's enhanced features properly.

The only exception to that I know of is some recent and fairly recent main chipsets support Hybrid video - both the onboard video and the video from the card in the PCI-E X16 slot producing video at the same time.
However, the card in the PCI-E X16 slot has to have one of only a few video chipsets supported by the main chipset's Hybrid video feature, otherwise THE ONBOARD VIDEO IS NOT DISABLED when you install the PCI-E X16 card and THE PCI-E X16 CARD PRODUCES NO VIDEO, untill you change some default settings in the bios.

If you supply your model number I can confirm whether or not your mboard has the Hybrid video feature.


Some genuine Intel (made by Intel) mboards require that you move a jumper on the mboard when you have changed which CPU you have installed, then moving it back, but I've never encounted one of those that requires that when you install a video card in a mboard slot.

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