Hey everyone, A few months ago my harddrive went bad and I couldn't use my MB anymore. I bought a new harddrive and everything is fine except now for some reason the mousepad and button no longer work. I've been having to use and external mouse which is a pain. The weird thing is that there is "some" responsiveness in the mousepad. For example, if I click the mouse button it will act as if pushing and holding the button down for dragging and dropping things. It won't stop doing this until I drag my finger on the mousepad, but the mousepad won't move the cursor. Is there any way to fix this or will I have to invest in a new Macbook? Thanks!