How to tell if you're running the RC or final release version of Windows 7

If you don't see any text in the lower-right corner of your desktop, you're probably running the final release version of Windows 7. But here's how to check:

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  Click the Start button , type winver in the search box, and then press Enter.

The About Windows window showing whether you're running the RC or final release version of Windows 7

This window displays the version and edition of Windows you're running. The final release version of Windows 7 is Version 6.1 (Build 7600).

If you're running the RC version of Windows 7, you'll see Windows 7 RC and Build Number 7100 displayed in the lower-right corner of your Windows desktop.