David is having problems with his Dell laptop. It autoscrolls when he opens a window and goes straight down to the bottom. It doesn't matter what he opens. Leo says that it's possible that the trackpad or keyboard are pressed or stuck. There may be some cruft in the key that's causing it to stick, or there's some "schmutz" on the trackpad that is giving a false positive and causing the problem. David should check his external mouse and keyboard as well.