I'm sorry to keep posting and concluding them. But this is the main and last problem that I need to deal with. My laptop is constantly making a loud grindy/buzzy sound that also makes my laptop vibrate.. I finally managed to take it apart and clean all the dust inside the fan and all around it with some tissues. There was a lot of dust inside, but despite cleaning it all out, nothing has changed to make the issue any better. It's a fairly small fan and it is all cleaned out now. Could it be the heatsink, or the piece that holds the fan in place?