Hello! I have two really annoying problems with my 6800 GT graphics card. The first is that every time i boot my PC the graphics card wont start. The screen is black and I have to restart my computer a few times before it starts. I notice it starts because of the pretty loud fan. The other problem is that in almost all games textures are very shimmering and shades look very bad. And even though I set the detail levels at minimum the game will still run very slowly. I have the latest directx drivers and the latest Forceware drivers. Any help is appreciated! Thank you.