Learn how to Install Windows 10 on Vultr VPS – Step by Step Video.
Vultr VPS: Get $100 Vultr Free Credits Now
This video shows how to install Windows 10 on Vultr VPS.
ISO for Windows 10: http://220.127.116.11/iso/Win10Pro.iso
To install any other OS like windows 7 or windows server 2016 you just need the ISO and rest of the procedure is same.
If you have any problem please ask in the comments section and I will be happy to help you.