I'm going to cut off ties with a friend who is trying to force me giving him a laptop
Are you certain you want to cut ties with him?
Yes. He has been violating my privacy by reading my emails and chatting with my girlfriend using my laptop.
It's not usually good to break friendships, but it sounds justifiable there. He shouldn't be forcing you to show him your laptop and invading your privacy; he doesn't sound like a very good friend.
I'm totally fine with it. I'm going to give my laptop to my parents.
It seems that you are right for cutting ties with this friend. However, you should try talking to him about the situation first. If he's not able to understand then you should do what you feel is best.