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31 Jan 2013  

windows 7 64 bit
Installed wrong windows 7 cd, is formatting again necessary?

Hello all,
so I made a mistake.
I formatted my drives roughly a month ago. I had a cd key that I use but did not have my windows 7 cd available when I needed to re-install.

So I used windows 7 home premium. The key I use is for professional.
My dilemma is when I tried to activate (professional key on home CD), the cd key was invalid (obviously).
The "trial" is about to expire. I have installed programs, games updated drivers and done all the entertaining tasks involved with a clean install and would really not want to do that again so soon.

My question that I have:
Do I need to do anther clean install? I have the proper CD now to get verified (and the key still), but after the daunting task of a format and clean install completed recently I would rather not go through that again.
Is there a way to put the proper cd in, use the correct cd key and have it authenticate or is another clean install necessary?

Thanks in advance.
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