Hi, I recently upgraded to windows 10 using the installer/downloader, however installed via bootable media (due to the upgrade feature not allowing the selection of partitions/separate harddrive to install on), and for whatever reason, when entering the product key for my version of windows 7 home premium, I get the error message "The product key you entered didn't work. Check the product key and try again, or enter a different one. Error Code 0xc004f050".
Is there any way for me to validate this version of windows 10 now, or did I mess something up by using a usb to install it onto a different harddrive, or is my version not valid for the free deal or....?