My system is a pentium D 930, xfx nvidia 6800xt video card, wd caviar se 200gb hard drive, 1 gig corsair ddr2 ram, liteon dvd rw and lg dvd rom. The first power supply that came with the case worked for a little bit then the hard drive wouldn't power up. I ordered a new power supply and now everything but the video card is working. the new power supply is a tagan tg-480 480 watt, dual +12v. is there any way that i can get some more power to get the video card running or am i going to have to buy another new power supply?