Robert had a hard drive die, and it had the recovery partition for Windows Vista on it. He put the Consumer Preview of Windows 8 on a new hard drive, and now is wondering whether that Windows Vista key will work to upgrade to the real version of Windows 8.
Leo says this is kind of unknown. The chatroom is divided over whether the consumer preview of Windows 8 will be upgradeable, although the RTM definitely will not. Leo recommends that he call Microsoft and tell them about his hard drive that died, and they'll probably help him with buying the $40 upgrade to Windows 8.