I have an old laptop (Lenovo e530), which came witn Windows 7 preinstalled. My new laptop arrived with Windows 10 preinstalled (Lenovo e550). I would like to put Windows 7 on my new laptop, too. Can I somehow "move" the Win 7 licence from an old laptop to an new one? Or do I already have a right to install all previous versions of Windows, once I have Windows 10 on it?
None of laptops has any stickers with serial numbers.