the chance of decreased performance due to thermal throtteling would negate any benifit from overclocking... most manufactureres wont allow you to fiddle with the clock frequency in the bios o0f a laptop
I doubt it would even let you. If you can do it it will be in the bios, look for BLCK or base clock adjustment, I'm not sure what it will be called on that laptop. If you can take a picture of the bios screen and post it if you cant figure it out. But like I said i'm doubtful it will even let you.