How to Find Out Your Windows 7 Key

1. Locate the Windows sticker on the bottom of your laptop or the back of your desktop tower, if you bought your computer with the Windows 7 installation. You will find the product key on the Windows sticker.
2. Look for the Windows registration sticker on the back of the case of the Windows 7 operating system CD if you purchased the software or upgrade after buying your computer.
3. Check the confirmation email received from Microsoft if you purchased your Windows 7 operating system online. The email from Microsoft includes your registration key.