Hello, I would like some help with my Laptop. When I turn it on, it overheats and shuts down in about 5 minutes. Now I know, you might say It's the fan clogged with dust, But I tried booting it yesterday and the fan was actually working. I always keep my laptop on the desk so I don't understand the problem. Conclusion: The fan turns on sometimes when I boot it and the laptop works fine, But mostly it doesn't turn on and the computer overheats and shuts down. How do I turn the fan on when I start my Laptop?