Windows 7: Error after installing graphic card driver

Hi,i recently installed windows 7 ultimate x32.when i install graphic card drivers i get "display kernel driver stopped responding and has been succesfully recovered" and i get TDR errors.i can play games with default driver that windows installed but games are laggy and crashes after 30 minutes if i play on higher graphic,i can only play on low graphics and i cant play minecraft cause it requires graphic card drivers .i have nvidia geforce 9600 gt and i can usually play games at medium to high graphic and older games at high but now without drivers i can only play on low graphic,and when i install drivers i get errors .only driver that worked for me is 306 beta but when i install that driver i get TDR error.pls help me
My specs:
Asus M3A78 motherboard
2Gb DDR2 RAM
AMD Athlon II X2 260 processor (2CPUs) 3.2GHz
570W PRO PSU Dual Fan
Nvidia Geforce 9600GT

Have you tried a newer graphics card driver?

Yes,i tried newest that work for some peoples with this problem but when i install newest i get TDR errors and computer freeze.