I had bought a hp laptop. It came with Microsoft Home and Student Edition installed in it. The edition of the same is Office 2007. But there is a problem with the product key. I got the key at the time of purchased but somehow it is lost. I am not able to get it back. Now I restored my system and the trail version is activated. I got a old file where I kept the key and when I enter that it shows it is not proper. I am getting a error that the key is incorrect.
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