1. Inorder to replace fix or install your new Toshiba M305-SP4901A 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 Toshiba M305-SP4901A laptop.
3. You will see your Toshiba M305-SP4901A Fan and Heat Skin exposed.
4. Use a screw drivers and remove the screws from you Toshiba M305-SP4901A HeatSin Fan.
5. Before reinstalling the new Toshiba M305-SP4901A Fan onto your laptop, you can clean the Toshiba M305-SP4901A Fan. To clean your Fan and Heatsink, use a can of air and blow out any dirk from your Toshiba M305-SP4901A Fan. You can also use a paint brush to clean out the dirt from the hard to get areas. Somtimes cleaning your Toshiba M305-SP4901A laptop fan will actually repair it. Dirt can cause the Toshiba M305-SP4901A Laptop Fan to make noise and even stop spinning properly.