Hi guys im new here so if you can please help me out and i will give you guys any info you may need. I jsut recently bought a 7800GSOC AGP. when im playing any game i dosent matter if its sims 2 guild wars WOW or fable i get black lines that will shoot across the screen they just jump all over the place. I did not overclock this card anymore then it already is from BFG. the power supply is 600w but i dont know if you need more then just a 600w psu. any ideas????