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Upgrade to Windows 8 with only a product key - Microsoft Windows
Learn how to download and install Windows 8 in a few steps by using just a product key.
Install, upgrade, &activate - Microsoft Windows Help
Get help with installing, upgrading, and activating Windows, including info about product keys, registration, and transferring files.
What is a product key?
Get a brief explanation about your product key and where to find it.
Product key for Windows 8 Media Center? - Microsoft Community
I have tried 3 or 4 times to get a product key for the Windows 8 Media Center. The internet info states it is available for free until January. January is almost here and have not received my key
Do want to purchase product key for $39.99, but want to activate - Microsoft Community
Original title: Purchasing the $39.99 product key. I purchased Windows 8 Pro, at a retail location, for my work computer. I installed it and used the product key, everything went smoothly. I decided I