Windows 7 Edition ?
Find which edition of Windows 7 you are using
Finding out which edition of Windows 7 is running on your computer can help you determine which features are available.
Watch this video to learn how to find which edition of Windows 7 you are using (0:35)
To find which edition of Windows 7 you are using
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Open System by clicking the Start button , right-clicking Computer, and then clicking Properties.
The edition of Windows 7 you're running is displayed under Windows edition near the top of the window.