Hi All, I search in the forum without success.. I have a Genuine key from Microsoft for upgrade Windows 8 Pro to Windows 8 Pro + WMC. Now I have upgraded to Windows 8.1 Pro + WMC from store. I need a clean install, but i don't want to reinstall Windows 8, upgrade to WMC and then Upgrade to W8.1 Pro + WMC. Is there any way to install directly W8.1 + WMC with the key that I have? This is the key that microsoft sent for free last year. Thank you for support