I am in search of the product key of Windows 7 that came with my laptop. I tried almost all methods to retrieve my old product key. I recently had to format/clean install Windows 7 on my laptop due to hardware issue. I want to retrieve my product key and I do not have the certificate of authenticity. How can I find it? When I asked microsoft they ask to contact the manufaturer and because my product is out of warranty, I am not able to communicate with HP.
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