to activate your VM use following command.
cscript C:/windows/system32/slmgr.vbs /skms ip address of KMS server for windows 7
cscript C:/windows/system32/slmgr.vbs /ato ip address of KMS server for windows 7
to activate your VM use following command.
cscript C:/windows/system32/slmgr.vbs /skms ip address of KMS server for windows 7
cscript C:/windows/system32/slmgr.vbs /ato ip address of KMS server for windows 7