hi, i need some help. I just bought a geforce 6200 256mb agpx8. When i plugged it in to my computer and try to press the start button it starts for .05 seconds and turns off. I had a 200 watt power supply at the time. But, there is not a problem when i take out the video card and use the integrated graphics. So, i bought a new power supply which the max is 600 watts. Still i have the same problem. The power supply works fine though. Please some one help me…