had bought this for a Windows laptop, but if my memory serves me right was not the CD! when copying data during instllation it remained at 0% .... Then I asked a computer teacher from my school and this then has given me a burned Win7 64bit version which I use from time to time today .... (yes the Product had bought)
otherwise stop Windows7, so far the best windows in my opinion! Windows Vista, 8, 8.1, I do not like ... Windows 10 looks far from promising :)