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the blue stuff keeps moving all over the laptop as seen in the attached picture . what can i do? .
Open it up and inspect your battery for swelling. Pressure from a swollen battery on the bottom of the track pad can cause this type of erratic behavior. It can also be caused by a virus. In the case of a virus, start up in Safe Mode by holding down the Shift key on start up and see if the issue persists, MacBook Pro 13" Unibody Late 2011 Battery Replacement
