Your graphics card is one of the most important hardware devices in your PC, since it is responsible for everything you see on your computer’s screen. Graphics card problems can lead to all kinds of errors, from corruptions on screen, to serious STOP errors and Blue Screen crashes. The problem is working out exactly what went wrong with your graphics card: it could be a hardware error, a driver problem or an incorrectly configured DirectX subsystem. Follow the steps in this article to pinpoint the exact cause of your graphics card problem and fix it quickly. I’ll also show you how to optimise your graphics card for a free performance boost by unlocking the hidden power of your graphics processor.