i am using a pc with intel core 2 duo 1.80 ghz cpu,2 gb ddr 2 ram,Asus p5kpl amps motherboard,640 gb sata hardisk(500 + 80 + 80) and a nvidia geforce 9400 gt graphics card.my operating system is win 7 ultimate.whenever i run my pc a message prompts at the bottom of the screen saying "display driver has stopped responding and this problem has been resolved" but this problem occurs after 30-40 seconds.i tried updating the nvidia graphics driver but that didnt solve the problem.now i have disabled my graphics card in order to run my pc.whenever i try to play any games i cannot play because hardware acceleration is not turned on.when i try to install my motherboards VGA driver in win xp or in win 7,a message prompts up that the system doesnt have the minimum requirement for the installation of the driver.how can i fix my graphics cards problem and where can i find the proper VGA DRIVER for Asus p5kpl amps?please help