Introduction
Needed remedies:
- Screwdrivers
- Brush
- Oil
Tools
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Remove battery
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Turn Netbook upside down
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Unscrew all screws from the back of the pc
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Remove the back plate
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Unscrew metal cover on top of fan
 
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Gently lift the fan making sure not to drop dust into the motor of the fan below
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Clean fan blades
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Clean the fan house
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place the fan upside down so the metal pin points upwards
 
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Apply oil
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Apply one or two droplets of oil onto the metal pin
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Place it on the motor and make sure it rotates without problems
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In case there is still sounds coming from the fan when turned on, redo the cleaning and lubrication.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.