How to upgrade windows 7 starter to windows 7 ultimate on Aspire One D255E

I have a Acer Aspire One D255E and im tryin to upgrade from windows 7 starter to windows 7 ultimate i used the upgrade anytime an put the key in it accepts the key and starts the upgrade then it stops an says try again an when i try to put in another key code it keeps loading the one an i cant try another what can i do to get this to work?
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  1. Hi :)

    Is this a LEGAL key and if so how much did it cost ? as Ultimate is drastically expensive and some machines wont run it, particularly small did run the upgrade checker of course ???

    All the best Brett :)
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