I followed instructions and let laptop charge for 3 hours ..only to find that the charger is not working. I was given a charger for another laptop and they added an adapter...assuming it would work.  It doesn't.  Fortunately I had a compatible docking station and fully charged the lap top for 6 hours.The step by step instructions didn't work. First screen I received upon booting up tells me essentially that battery won't hold a charge and needs to be replaced.  One would assume that would be an item on the "refurbish checklist" before declaring it ready for resale.I was finally able to activate windows 10.So I guess I will have to buy a new battery and charger.....Buyer beware