[tbmercer78]

im running a pc with windows xp, i have a 16 mb ati rage 128 ultra which i just found out uses an agp slot. I bought a nvidia Geforce8400 that uses a pci slot. the 8400 is installed and it tells me that it is working properly, but when i switch my moniter to the new card, all i get is a black screen.

so i have these questions. 1. should i return my geforce 8400 and buy a GeForce 6200 Video Card that will fit in my agp slot?

2. or can i use the 8400 that i have? and if so, how do i do it?

[crjdriver]

OK, you are missing a few steps when attempting to install your card.

1 With the old card still installed, uninstall the driver for the card.
2 Shutdown and pull out your old card
3 Install the new card in a pci slot; connect monitor. Note your bios may need to be set to use pci video. Read your manual.
4 Pw ON and see if you get a display on your monitor.

FWIW with that old of a card now installed, I would think the agp slot is a 1X or 2X. This will not work with a modern agp type card which needs 4/8X to work.

If the above procedure does not work, I would NOT be putting any money into such an old system. It is not cost effective.