Before we start, in general to clean your laptop , you need to bring it to a service centre to clean it properly , but the following steps will sure help :
Advice: do not use an AIR duster as the compressed air could turn into liquid when you release it quick , therefore follow the next steps to clean dust from your laptop:
1. Find the fan hole, normally you need to turn the laptop upside down to see it
2. Some laptops have the fan extractor on the left or right side .
3. Use the hoover to extract the dust by bringing the hoover tube nasal to the computer side of the fan.
4. Doing the above steps every 3-4 months will help keep your laptop clean.