Windows 8 is one of the newest versions of Microsoft OS with a lot of updates, especially the integration of metro style to Start Menu sso if you wanna try then you can download it from here.Trial Version is usually for 90 days and after that you need the product key then buy it from the official website and if you already have it then follow some easy steps below.
1. To activate windows first run Command Prompt and write slui 3 command.
2. The new windows will appear that will ask your windows key that you might get from the Microsoft store and then press activate button.
If you wanna know some other Windows Tips from Hqtips check Here