In many occasion, you will need to know the precise Windows version you have. When you want to install a software, it will be asking for minimum requirements of Windows version.
In Windows there are many different version/edition as below:
Windows version and editionWindows XP Home
Windows XP Professional
Windows XP SP1
Windows XP SP2
Windows 7 Starter
Windows 7 Home Basic
Windows 7 Home Premium
Windows 7 Professional
Windows 7 Ultimate
Windows 8.1 with Bing
Windows 8.1 Pro Pro
Windows Phone 8.1
Windows 10 Home
Windows 10 Pro
Windows 10 Mobile
Depends on what version of Windows you are using, below are the steps you can test:
Using Winver commandPress and hold windows key + R key, it will bring you Run command, type Winver and press Enter key.
It will show you what Windows version currently you have.
Using System in Control PanelOpen Control panel, see how to open control panel here.
Click System icon
You will detail of Windows version you are using now.