Each Windows 7 disk or installation includes a unique product key which validates your copy of Windows as genuine. Without a product key Windows 7 can only be installed for a 30-day evaluation period after which you'll have to either enter a valid product key or cease using some Windows 7 features. Unfortunately for some Windows 7 users a lost or missing product key must be replaced with a new product key in order to continue using Windows.
- Skill level:
- Moderately Easy
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Visit the Microsoft online store or a local retailer that carries Microsoft Windows products.
Select the version of Windows 7 that you currently have or just purchased. Purchasing an upgrade or different version of Windows 7 will provide you with a replacement product key.
Enter the Windows 7 product key that you received with your new purchase when asked for your product key during the installation and activation process.
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