What the heck did my Mom do? She's using a 22" widescreen monitor, and recently, the image shifted about 2" to the left, leaving a grey stripe down the right side of her screen. If she plays a game in a full sized windown, the stripe is still there, and she can't access the very left edge of the game screen with her mouse. I poked around in her display settings, and reset them. The screen went back to normal, but what did she do to cause that in the first place?