One of the most common issues with laptops overheating because the cooling fan is not running properly. Replacing this is moderately difficult due to the fact you have to remove so much to get to it and it will take 30 minutes to an hour. Before beginning the replacement wear an anti-static wrist wrap so you do not cause damage to the other components of the computer. Do not push on the keyboard clips too forcefully because they will break. The same goes for ZIF. When removing the keyboard do not fully lift it because of the ribbon cable and the ZIF. The same goes for the motherboard. If you try to pull this up it will damage the cable underneath it. If you have any further questions you can leave a comment and we will get back to you as quickly as possible!