So earlier this week, I had my laptop just shut down on me while I was working on something very important. The entire thing would load up, freeze and then I would have to force it to shut down. It didn't feel hot, but I did notice that there was a slight increase in the volume of the fan. I started to think that the entire thing was done for, but I opened it up and cleaned out the fan just to be sure because I remembered the emergency shut down method in the event that the laptop is going to fry. She works like a charm now. It's much quieter, works much faster, and has not shut down on me once since cleaning it out. Definitely keep a can of blaster nearby that way you can avoid a meltdown and panic attack like I had thinking that my work computer was done for. :)