Installing a video card into a computer is very easily done. A few measures need to be taken to ensure components are not damaged in the process. If you have an anti-static wrist strip I recommend wearing it during the installation process. If not, touch the metal portion of a hammer to remove any static electricity from your body before proceeding. If you are upgrading a video card, the process initially involves removing the previous software driver and then removing the video card itself.
1. If you are upgrading from a previous graphics card, begin by removing the current video card drivers from your system. This is accomplished in Windows XP by clicking Start → Settings → Control Panel → Add/Remove programs. Locate the graphics driver in the populated list and click uninstall. For Windows Vista or Windows 7 users, click the Windows logo in the bottom left of the screen, select Control Panel (shown below) and choose "Uninstall a program" (note the red box) in the lower left section. Select the graphics driver (red box around it) then click "Uninstall/Change."
2. Once the driver has been removed, power down the computer and unplug all the cables from the back and remove the side cover from the case.
3. Locate the current video card (if you have one) in the center section of the motherboard. Unscrew the Phillips screw(s) holding the card in place.
4. Gently pull the card up from the slot and lift straight upwards, the card should slide right out. Some motherboards include a small clip to lock the card in place, if you see this, simply hold the clip to the side as you begin to pull the card out.
5. Slide the new card into place making sure the card is fully seated into the slot. See the images below for an example of a partially seated (top image) and fully seated (bottom image) video card.
6. Attach any power connectors to the video card. Failure to do so will result in a message informing you that the video card is not receiving enough power when the computer is turned on.
7. Next, put the side of the case on and attach all the cables, then power on the computer. The monitor might display a warning indicating your resolution is very low until you install the driver for the video card. Go to your video card manufacturer's website, either www.NVIDIA.com or www.ATI.com and download the latest driver for your video card. Install the driver and you will be prompted to restart the computer.
8. Thats all there is to it! Now start enjoying that card!