In general, I say DON'T OC A LAPTOP.
There are a couple of reasons why laptops use lower power processors and not desktop processors. 1. battery 2. heat.
For this thread, HEAT is your enemy. Laptops are already finely tuned to give you the highest power possible while avoiding over-heating. OC means you are going to introduce more heat to this finely design. On a desktop, you put in more fans, faster fans, bigger heatsink, even go liquid, but can't in a laptop.