How to Change windows 7 Product key with command line
1 – Open command line program with administrator privilegies
2 – navigate to c:\windows\system32
3 – now you ready to install the new Product Key with this command
slmgr.vbs -ipk "insert your new product key here"/code>
4 - wait for a popup that indicate result operation
5 - after you can activate your product with this command
slmgr.vbs -ato