Hi, I have a laptop with an empty drive and a separate Windows 8.1 license. No media, only the license. The laptop does not have an optical drive, but can boot from USB. I would like to install Windows 8.1 on this laptop. The person who will use it does not want Windows 10 right now. I thought this would be trivial, but I am simply not able to figure out how to do this. Can I download Windows 8.1 from somewhere and get on to a thumb drive? I have tried to download some images, but it hasn't worked. Could someone please let me know how I could get Windows 8.1 on to this laptop using my license?