Recently, one of our readers sent in this question to us that they have lost their Windows 7 CD and cannot find their product key, however they wanted to reinstall their system and could not do it without a product key.
First of all, Microsoft stores your Product Key or CD Key on your PC itself and it is not easy for a normal user to sift through the files and find it. However, there are software which do this job very well.
Just like our Office 2010 product key finder there is a tool which will allow you can also extract the product key of Windows 7 from your system. To do that, you have to install the Keyfinder tool from Jelly Bean (download link below).
Once you have download the Jelly Bean Keyfinder tool run it and it will display the CD Key to you along with the Product ID of your PC. You can then copy this information and use it to install Windows 7 on another OS.
Please make sure to store the Product/CD Key securely once you have extracted it from your OS. It will always come in handy later. If you have any questions like these, feel free to contact us and ask us about it.