New
#11
It appears the OP used an Upgrade after wiping XP so installer didnt' see it when scanning the HDD at bootup.
Either run a Repair install (upgrade over itself) from the new Win7 desktop to allow it to take key, or do the registry workaround being given out by MS tech support which is reported here: http://www.winsupersite.com/win7/cle...rade_media.asp