I dont have issues like that at all, I think you have a bad card. Are you Alt -tabing out? When I alt-tab out and come back in after a while I get a vertical line on the edge of my right side of the LCD. Im sure its a driver issue with WOW because it does not happen in HL2 or CS when I alt tab out from there. To be honest, I havent found a way to overclock the x1400, It reboots the computer after you try to overcloock it. Hope that info helps.