I've never found help on this anywhere else.
Bob
Hi,
I purchased a Win8 upgrade online from microsoft.com the first week it was released, and installed it to a machine fine but some of the drivers didn't work so I uninstalled it (back to XP).
Now, I'm trying to reinstall the same "unused" upgrade on a different machine, and have the product key and receipt, but the "Windows8upgradeAssistant.exe" file now only allows for the purchase of Win8 or Win8 Pro - no ability to input my existing upgrade key?? (Like the last install, using this exact same file, this machine also has XP-SP3.)
Normally you've got a Windows OS disc, and a valid key. ...I've got the key...??
What to do?
Thank you for your time.

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