I have core 2 duo E7300 , Biostar, DDR3 4GB , GT220 PC. I used 32" LED TV & HDMI out put to watch my blurays via this PC. It worked fine until now. Today when i watching a movie my screen displayed Blue screen and restart. but it keep restarting after reaching windows logo. so i re install the windows but it kept restart. Then i realize that restarting happen only if i install nvidia drivers. so i Google it and found that low power cause the problem. i replace my 450 W PSU with 550 W brand new PSU. then Windows start without hazel. But after restart it happen again. now i remove the card and using onboard VGA. now i getting "Display driver stopped responding and has recovered " error. i tried windows FIX but it won't work . please help. i just want to know that problem is caused by my motherboard or Graphic card.