If your motherboard has a built-in video adapter you want to use, skip this
section.
If you have an AGP video card, install the video card into the AGP socket.
This is always the top expansion slot near the back of the computer. AGP
slots are often brown, but can also be strange colours such as fluorescent green.
Check the motherboard for levers (or similar devices) that are part of the AGP
slot to help hold the card in place. These must be retracted before insertion of
the card. Check the motherboard’s manual for information on how to use these
devices (if your motherboard has one.) Push the card into the socket (AGP
slots are often pretty tight, don’t be afraid to push it until it’s well inserted),
then screw it in at the top of the metal bracket. If it has a power connector,
connect it to a 4-pin molex connector. If it has a pass through, do not connect
it to a hard drive.
If you have a PCI Express video card, install it the same way as an AGP
video card, however the slot where it goes looks a little different having an extra
spot on the slot as opposed to the 2 slot parts on an AGP slot. PCI Express
slots used for video cards are commonly 16x as opposed to AGP 8x.
When your card is properly installed the line formed by the top of the card
will be exactly parallel to the motherboard, if one side seems to be higher than
the other, chances are that it’s not fully inserted, press a little harder on the
high side or pull it out and try again.