My Laptop's trouble I’ve used my laptop for five years and I’m bothering heat dissipation of it in these days. The fan equipped with the PC causes the heat trouble, because it is supposed not to work sufficiently by dust. Since my laptop get slower day by day even opening a website, I decided to dissemble it to recovery from. A way to open a rear cover of the laptop is introduced online. Then, I will try to fix the fan as referring to the process. However, I can’t check the procedure while opening the laptop’s cover, because the display need to be closed. After I remember the way, I’ll tackle it.