Problems with Graphics Card upgradation

Hi

I have a P4 machine with 32MB inbuilt graphics card.My mother board is manufactured by Mercury.Recently I bought a 512MB Gigabyte graphics card for upgradation.When I installed the card in the expansion slot (i think AGP slot -the white one) and connected the montor cable to this newly installed card interface my computer does not detect it.Can any one tell me what settings I should do on the comp so that I can use the new card and diable the inbuilt one.Do i have to change any BIOS settings.Or any settings in Windows.Please help.

Thanks

Jejo.
jejob007Asked:
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CallandorCommented:
The AGP slot is actually brown, and the PCI slots are white.  Onboard graphics is usually AGP, so you may need to set the preference in the BIOS to PCI before you install the card.
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MarkCommented:
Some bios do need you to choose which video will be used on startup. Onboard or AGP. If you give the model of the mercury board the manual can be found. These settings should be found in there.
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MarkCommented:
Actually Callandor, mercury doesn't hold fast and true to the color code system of most manufacturers. They do have some boards with white AGP slots. here is an example.
http://www.mercury-pc.com/product-detail.php?link=p-mainboards&subtitle=Mainboard&productid=676
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CallandorCommented:
Well, I'll be ...!  Now that will confuse all sorts of people who have to guide people without actually seeing the hardware.
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MarkCommented:
Can you post the motherboard model so we can give more specific instruction on how to accomplish the changing of the bios settings. also, you may want to check and make sure the card is seated properly in the slot in case its just not making proper contact.
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