I have a laptop (a Compaq Presario, if that helps any), and sometimes when I'm in the middle of typing something, it'll somehow switch to caps lock. I don't accidentally press the caps lock key, and the light that shows that it is on doesn't light up. The number keys won't work correctly: if I press the number 8, all I get is the * symbol. If I press the period key, I get the > symbol. When I click on a link, it automatically opens into another window, even if it shouldn't. Sometimes everything will go back to normal by itself, but I usually have to restart the computer to get things to where they should be.
What's going on? Am I unknowingly pushing a button that I shouldn't be pushing? Help please!