I bought a Asus Transformer book tablet with Windows 8.1 with Bing and I also purchased a Windows Pro Pack from Amazon.com. When I go to upgrade the license it gives me an error: "That key can't be used to activate this edition of Windows. Please try a different key."
Is it possible to upgrade Windows 8.1 with Bing to 8.1 Pro? If so, what do I need to do?