Installing in a Windows Desktop
Determine what kind of expansion slot your computer has. There are many types of desktop PC expansion slots, such as PCI. PCI-e, PCI-e2.0 and AGP. You can determine which kind of slot your computer has by looking at the motherboard (meaning you'll have to turn off your computer and remove its case) or by reading the schematic of the motherboard in your computer's user manual. you can also google the type of computer you have and get the manual online if you don't have it. You'll need to get the kind of graphics card that fits into the slot you have.
Uninstall any old graphics card drivers you may have. To uninstall the drivers, find Windows' Device Manager. In Device Manager, double-click your graphics card's name to display its Properties window. Click the Driver tab and then the button for uninstalling the driver.
Turn off your computer. Disconnect the power cord from the back, or unplug it from the outlet it's connected to. If the computer was running for a while before you turned it off, you may want to give the components time to cool before proceeding.
Open the computer's case.
Ground yourself. Either touch a metal part of the computer case or put on an anti-static wrist strap. This will prevent you from getting an electric shock and from damaging the electronics in your computer by giving it an electric shock.
Locate the slot your old graphics card is in or the slot your new card is going in. Depending on the configuration of your PC and its motherboard, you may need to lay the unit on its side.
Remove your old graphics card. You'll first have to remove a small screw attached to the back plate before you can take the card out.
Install the new graphics card. Press the card straight and firmly into the slot. Make sure the card is firmly in the slot; your computer won't start up if the card isn't fully in place.
Replace the screw in the back plate.
Replace the computer case cover. Plug the computer back in.
Install the drivers for your new graphics card. If you are installing in Windows Vista or later, Windows should automatically detect the presence of the card and install the new drivers for you, but do not count on this, all graphics cards come with a driver disc. insert this disc once you boot up and install from the disc.
Restart your computer. This completes the driver configuration process and lets your computer recognize and work with the new graphics card.
technical support for your card.
Installing in a Macintosh Desktop
Follow the steps under "Installing in a Desktop PC" from turning off your computer to locating the slot the graphics card goes in.
Remove the bracket holding the old graphics card. Macintoshes use a PCI slot for their graphics cards, and the cards are held in place with a bracket secured by 2 screws. Unscrew the bracket and remove it.
Release the locking clip that holds the card in place. The clip is located at the front of the card's logic board connector. Push the clip up toward the media shelf to release it.
Remove the old card from its expansion slot.
Install the new graphics card. As with a PC desktop, press the card straight and firmly into the slot.
Replace the PCI bracket and screw it back down.
Close the case. Replace and secure the access panel, then plug the Mac back in.
Restart the machine.
Things You'll Need