Windows 7 is the most recommended OS to do almost ...

Windows 7 is the most recommended OS to do almost all work without any problem, So I recommend you to activate your existing OS being purchased its license code from: ODosta Store
Which is distributing license for almost all types of Microsoft Products with good customer support. I personally use it and have a good experience.
You can upgrade your windows 7 or windows 8.1 pro to windows 10, But you can face some technical issues, So I recommend you to have clean installation of Windows 7 windows 8 or Windows 10 and activate it using legal license.

Kaiser Bey

Kaiser is a tech enthusiast who likes to write, read and talk about tech. He dreams of going to Mars and never come back. We hope that you find his posts on AndroGuider helpful and informative