The mouse is built into the keyboard of the laptop. It looks like an eraser on a pencil.
mouse problem, March 2005
Does the mouse have a ball at the bottom? If it does this will need a clean. There should be a way to release the ball on the underside of your mouse. Inside the area where the ball sits there will be three rollers. These are probably clogged with dust. Use a Cotton Bud or the end of a pencil to clean out the dust.
Sam Turner, March 2005
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I can answer this question...
The mouse on my laptop keeps moving on its own after I stop touching it?