On the bottom of the laptop is there a sticker of any kind? 99% of all laptops come shipped with an operating system, and a licence. The sticker is put on the underside of the computer and this has the product key which you can use if you have to reinstall windows. If the sticker says windows xp or vista, and you have windows 7, then you don't have a licence. You're right in that they shouldn't be installing it without a licence, however their argument may be to tell you that you need to buy your own licence. So if you bought yourself a copy of windows 7, you can simply use the licence key fro