I did this when I had Vista/U. For a few years I ran 32-bit and since I had
the 64-bit disc also, I installed that and used my key that I used for the
32-bit. Activation was never a problem.
"Daft Fred" <> wrote in message
news:1jaJm.2474$...
> I've installed the 32bit version of Win7 but would like to give the 64bit
> version a try as my processor can handle it . I'd do this a clean install
> of course but having registered the 32bit version would I be allowed to
> install the 64bit using the same license ? It's the full version of Win 7
> Ultimate (not an OEM). Thanks
> Fred
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