I have Gigabyte Nvidia GTX 460 graphic card in my computer and I am using asus P5Q motherboard in my computer with 4Gb RAM. I have installed windows 7 operating system and before that was using windows vista in my computer. From last few days my graphic card Is giving me some issues. Now when I start my computer at that time all the things work properly for some time and after that my system gives errors regarding the drivers and while playing games i am getting blurry graphic. Please tell me what should I do to solve this issue?