If you have noticed that your laptop has been running slower and progressively torturing your patience… then here’s a little bit of geek that you can do:
While the laptop is off, turn it upside down and vacuum out the air vents (Don’t use canned air, you’ll force dust further into your laptop).
Turn on your laptop and completely amaze your friends with your new-found geekness!

Here’s the logic behind this:Dust and lint gets wedged between the fan and the heat sink and the airflow becomes limited. This can cause the laptops components to overheat and the fan spins faster to compensate for bad airflow. This overheating will reduce the performance of the laptop and it’s battery charge and could also reduce the laptop’s lifespan.