when i play a game my laptop shuts down

[hirrak]

When I play fifa 11 demo game in my laptop then laptop is automatically shutdown.now what I do

 

[Neur0nauT]

Sounds like Thermal shutdown after overheating. As Vembutech has said. Clear dust from the exhaust fan with compressed air.

Invest in a Laptop cooling pad like this: http://www.amazon.co.uk/Targus-AWE55EU-Laptop-Cooling-laptop/dp/B002Q8X3L2

Not saying you do this, but, refrain from using the laptop sitting on your lap or on cloth material surfaces such are your bed, body heat doesn't help keep it cool either.