I love my little chromebook and it has served me well past it's life expectancy. However, it is having several problems now and I think the time has come to replace it. I bought a "new" one on ebay, someone had purchased it but only used it a few times and was selling. So, now I would like to sell mine so it may be refurbished or used for parts at least. My concern is info on it. How do I wipe everything clean from it? I don't have a clue how to do that, so if someone with that particular knowledge would give me some advise I would be so grateful!