Alright so to start things off i have a 13 inch macbook pro late 2011. So my macbook fell 1 foot off of my table then i caught it. It did not hit anything but after i put in back on the table i could not use my mouse not the touch pad and i couldn't hear anything so i shut it off. The vent kept going for like 2 min. after i shut it off but then it stopped. I soon turned my computer back on and everything was fine. But then i was changing the sound and if i pressed the button even remotely fast it would lag my whole computer up and i wouldn't be able to move my mouse or anything. That would only happen for about 1 min. So then when i am browsing the internet i see a blue circle which is on my mouse and it is like a loading screen that does not go away. Lastly i have 8GB of RAM and my computer rarely lags like this. Thank you in advance for the help.