Windows 7 Ultimate:342DG-6YJR8-X92GV-V7DCV-P4K27......DELLFJGCP-4DFJD-GJY49-VJBQ7-HYRR2......ACER22TKD-F8XX6-YG69F-9M66D-PMJBM......LENOVO49PB6-6BJ6Y-KHGCQ-7DDY6-TF7CD......SAMSUNG Windows 7 Professional:32KD2-K9CTF-M3DJT-4J3WC-733WD......DELLYKHFT-KW986-GK4PY-FDWYH-7TP9F......ACER74T2M-DK*C-788W3-H689G-6P6GT.......