LAPTOP KNOWLEDGE : Use recommended methods for cleaning your laptop.
When cleaning your laptop, only use cleaning solutions and cloths prescribed by the manufacturer. Here are some general laptop cleaning guidelines:

Clean the exterior case of your laptop by wiping it with a soft, damp cloth.
Use either a dry or damp cloth to clean the screen.
To avoid damage to the LCD panel, do not press too hard on the screen.
Avoid using harsh chemical agents to clean your laptop, as these agents can have bad side effects.
Do not spray any cleaning agent directly onto any part of your laptop.