AGP is one of the slots on the motherboard and it is designed for a video
card. I don't think you could possibly 'turn it off' else, if you had that
kind of video card, you would see nothing on the monitor.
It is a dedicated graphics adapter slot on your PC's motherboard.
If it is disabled then your PC functions with an on-board graphics chip,
or a PCI-X (express) graphics card.
AGP will be listed in device manager, thats where you enable it -
if it has been disabled - enabling it is acadamic unless you have a card
to slot into it?
read these: http://computer.howstuffworks.com/agp.htm
