You can check your Windows Version using 2 this method:

1st Method

1. Right click on My Computer icon which is located at your desktop and choose Properties.

2. You can find your windows version as shown as below. In my case, my notebook use Windows 7 Home Premium.

2nd Method

1. Click on Start Menu > Run and type this command:

winver

2. You can find your windows version as shown as below.