How to Tell If Your PC Graphics Card Is Going Bad
The graphics card of a computer helps control and improve on the display of both video games and some high-end computer rendering programs. If the video graphics card begins to fail, so too does the program. Because of this, it is relatively straightforward to determine if the computer's card is going bad or not--the change in system performance is going to point in this direction.
Connect a computer monitor to your video graphics card (plug a VGA cable into the VGA port on the card, then insert the other end into a VGA port on the monitor). View the monitor while performing your standard, everyday tasks. If the video begins to fail on you or cut out, it means the PC graphics card is going bad.
Load a video game or other graphics related software you use on the computer. If the graphics are not rendering as quickly as usual, your graphics card is probably going bad.
Monitor your computer for any error messages that appear when using graphics programs. Error messages mean there is something wrong with the graphics card, although the exact problem is going to depend on the error message.
Boot up the computer system. If the start-up screen is displaying on colors or designs, it means there is a problem with the graphics card, and is a pointer to the card beginning to go bad.