hello i have a NVidia e-geforce8800 gtx graphics card and its started getting black squires like a checkers pattern on the screen and then goes to a black screen then i have restart then it does it again what is wrong with it and what can be done thanks Craig add meon msn email@example.com
Make sure your card isn't overheating. Use GPU-Z and check if your card is going over 90 degrees. Also, try System Restoring your system back to a time before this issue happened. If you overclocked, and cannot get your system to work, a System Restore is a good fix. Try vacuuming your graphics card (it helped for me).
This is common for G80 cards to fail in this manor. Usually the result of micro fractures of the bonding for the gpu and the vram. Baking your card may be the best way to fix this issue as the last resort. Pre heat the oven to 385 F and bake the card for 10min but allow the card to cool for at least an hour before reapplying the cooler and using the card.