Posted 12 December 2011 - 04:26 PM
Posted 12 December 2011 - 05:18 PM
Posted 14 December 2011 - 10:10 AM
If you receive an error indicating that your product key is not valid when installing Windows 7, it could be for the following reasons:
You might have mistyped your product key. Try retyping it.
You might be using a product key that doesn't match the version of Windows 7 that's installed on your computer. Check the product key to make sure it is for the version that you are trying to activate. You can't use a product key for Windows 7 with Service Pack 1 (SP1) to activate a copy of Windows 7 without SP1.
The product key is for an upgrade version of Windows 7 and a previous version of Windows wasn't on your computer when Windows 7 was installed. To install an upgrade version of Windows 7, Windows Vista or Windows XP must be installed on your computer. If you formatted the drive before starting the installation process, you won't be able to use the upgrade product key to activate Windows 7. To activate Windows 7, you'll need to install your previous version of Windows, and then reinstall Windows 7.
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