Ok the actual install did not fail but i think the activation did. Here's the story: Friend activates Windows 8 through KMS. He buys a legit Windows 8 key from M$ for $10. He uses Add features to Windows to upgrade to WMC using that key. The upgrade is successful. But... It says that Windows 8 is activated but only to 30 days from the upgrade. It says that the license will expire 30 days from the upgrade date. Is there a way for him to clean install Windows 8.1, activate using his upgrade key, and have a permanent activation? I have done that with my Windows 8.1 installation so I am familiar with that process but I am unsure about the permanent activation part.