1. Inorder to replace fix or install your new HP G72-120SD laptop fan and heatsink, you will need to open up your laptop. You can do this by removing the screws from the bottom of the laptop.
2. Once the screws have been removed from the bottom of your laptop, you can now remove the keyboard and plastic bezels from your HP G72-120SD laptop.
3. You will see your HP G72-120SD Fan and Heat Skin exposed.
4. Use a screw drivers and remove the screws from you HP G72-120SD HeatSin Fan.
5. Before reinstalling the new HP G72-120SD Fan onto your laptop, you can clean the HP G72-120SD Fan. To clean your Fan and Heatsink, use a can of air and blow out any dirk from your HP G72-120SD Fan. You can also use a paint brush to clean out the dirt from the hard to get areas. Somtimes cleaning your HP G72-120SD laptop fan will actually repair it. Dirt can cause the HP G72-120SD Laptop Fan to make noise and even stop spinning properly.