1. Inorder to replace fix or install your new HP dv6620ev 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 dv6620ev laptop.
3. You will see your HP dv6620ev Fan and Heat Skin exposed.
4. Use a screw drivers and remove the screws from you HP dv6620ev HeatSin Fan.
5. Before reinstalling the new HP dv6620ev Fan onto your laptop, you can clean the HP dv6620ev Fan. To clean your Fan and Heatsink, use a can of air and blow out any dirk from your HP dv6620ev Fan. You can also use a paint brush to clean out the dirt from the hard to get areas. Somtimes cleaning your HP dv6620ev laptop fan will actually repair it. Dirt can cause the HP dv6620ev Laptop Fan to make noise and even stop spinning properly.