I just started noticing today that after bootup in Windows 7, I'm getting moving horizontal lines across my screen that looks like radio interference - noise. The moving lines don't show up on an external monitor, just on the native laptop screen. External monitor picture is perfect. I've swapped out video drivers with no change. The problem doesn't show up until the OS loads - the laptop screen is perfect until the login screen loads. I have a single GTX 260M video card. A03 bios. All drivers current version. No problems until this morning. Any suggestions?