hy, i have a calibrestyle gtx580 and i'm having a serious problem with it. White lines all over the screen. Have tried every combination and it's defenately gpu problem. White lines dissapear under the mousepointer. Device manager says that gtx580 is installed but has "!" next to it. When windows strarts up it says taht it cant wind compatible hardware or something. as if it does not recognize the gpu. white lines are even in the bios. only time they dissapear completely is when there is the black windows loading screen.