How to turbo (overclock) your gaming laptop?

Well I have this laptop

http://www.amazon.com/Lenovo-Y50-Laptop-Computer-Generation/dp/B00KD5DUR2/ref=sr_1_4?s=pc&ie=UTF8&qid=1412908427&sr=1-4&keywords=Lenovo+Y50

and I want to Overclock, Turbo so it can work faster, I know if you do that it will last less, but I want to know how to do it and how to desactivate it for later.

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