DO NOT BUY THIS USED FROM THE AMAZON WAREHOUSE. I wish I had read the earlier review about this. Though there is no indication in the description, the Amazon Warehouse version of this product does not come pre-loaded with Windows (meaning no Windows S Mode or Windows Home). The computer will promote you to activate Windows but there is no Product Key provided by Amazon. Check the other one star review on here that details the issue. I've gone through 2 returns now, and I cannot get a usable laptop. Amazon will have you talk to Microsoft, who will have you talk to Asus, and they will give you a product key but it won't work unless you have the recovery media for your laptop (not included in warehouse laptops apparently). Basically, if you buy the Amazon Warehouse version, you will most likely need to by a copy of Windows.DO NOT BUY THROUGH AMAZON WAREHOUSE.