I am fixing a laptop for a friend. I really just need to wipe and reinstall 10. She does not know anything about the office 365 (2013) that is on her laptop. It is activated but I will need product key, which she does not know, in order to reinstall after I do a clean install. I have googled how to find product key but have yet to find anything that works. Anyone know a way to find the key on this laptop?