I have a Lenovo B50 30 touch with an intel pentium CPU inside of it, and I am curious if it's possible to upgrade to a Core i3 or i5? I've talked to some people about it and they said it's possible but the biggest problem will be the temperature requirements. And others have said you can't upgrade a laptops processor at all. So can I upgrade it? Would I need to upgrade the fan to deal with the temp?