Motorola Droid :: White Line Across Lock Screen

All of the sudden a white line has appeared across the middle of my lock screen. If I open up the keyboard (so the screen becomes horizontal) the line also turns horizontal but doesn't go all the way across the screen (just extends the distance of the vertical width of the phone) The line does not appear when I log in, so it's not dead pixels. I tried changing the wallpaper, didn't do anything. Tried taking out the batter, but also didn't do anything. I tried the pixel fixer app, but again it's not dead pixels so obviously that didn't do anything either. Suggestions? I suppose the next step is to restore the phone to factor defaults (how do I do that?), unless someone has something else I can try