I have a Macbook Pro late 2011. It hasn't been running very well lately - it gets hot sometimes, the fan comes on. I have to restart it kind of often and that helps with slow webpage loading etc. I noticed a couple of weeks ago that the mouse wasn't clicking very efficiently - I'd have to pause a second when holding it down to click. This afternoon it slid off my sofa onto the carpet - it landed right side up and seemed fine until I went to click and nothing happened at all. I could still move the cursor around but it wouldn't click. I have to put my usb remote mouse on now. Does this sound fixable?