Posted 10/27/09 at 10:30:00 AM by Justin Kerr

Anyone who tried to install their upgrade version of Windows 7 to a fresh drive was treated to a cruel wake up call. Not when they installed the OS, not even after they installed all their applications, but when the time came to activate. The deal with upgrade media is simple, an existing, and activated copy of Windows must exist on the hard drive prior to installation, or be prepared to start over. To make matters worse, the activation warning doesn't even give you a phone number to call and appeal you're case.  The good news is you’re not dead in the water, that is, as long as you're comfortable making a few simple registry edits.

This guide will give you tips on all the upgrading scenarios, and even teach you how to use your upgrade DVD to perform a clean install on a fresh system with no prior OS. We show you how to turn the tables on the dreaded activation error code 0xC004F061: "The Software Licensing Service determined that this specified product key can only be used for upgrade, not for clean installations."

Read on to learn how.

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