Para upgradear a Windows 7 Home Premium: 6RBBT-F8VPQ-QCPVQ-KHRB8-RMV82

--OTROS--

Para upgradear a Windows 7 Professional: VTDC3-WM7HP-XMPMX-K4YQ2-WYGJ8
Para upgradear a Windows 7 Ultimate: 22TKD-F8XX6-YG69F-9M66D-PMJBM o tambien FJGCP-4DFJD-GJY49-VJBQ7-HYRR2