My mom reinstalled Windows 7 from a bootable USB and there is no way to activate Windows 7 as she could not find the registry key. The internal hard drive is not touched. Is there still a way to help her find Windows 7 product key under this circumstance? 

I heard the product key could be found in Registry or using cmd. However, I am not sure whether this works as I am not a tech savvy.

​My mom reinstalled Windows 7 from a bootable USB and there is no way to activate Windows 7 as she could not find the registry key. The internal hard drive is not touched. Is there still a way to help her find Windows 7 product key under this circumstance?  I heard the product key could be found in Registry or using cmd. However, I am not sure whether this works as I am not a tech savvy.  Read More

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