Nếu máy bạn đã có BIOS SLIC2.1, thì có thể dùng key OEM để active bản quyền, hoặc nâng cấp. Các crack WIN 7 hiện nay đều giả lập SLIC2.1, nếu bạn dùng crack rồi thì vẫn có thể dùng key để upgrade nên phiên bản cao hơn.
key đây:
CD Keys for Microsoft Windows 7 Starter (OEM-8992752) (OEM-8992707)

RDJXR-3M32B-FJT32-QMPGB-GCFF6 --- XXXXX-OEM-8992752-30004 --- ACER/GATEWAY/PACKARD
6K6WB-X73TD-KG794-FJYHG-YCJVG --- XXXXX-OEM-8992752-30005 --- ASUS (Eee)
36Q3Y-BBT84-MGJ3H-FT7VD-FG72J --- XXXXX-OEM-8992707-00082 --- DELL
RH98C-M9PW4-6DHR7-X99PJ-3FGDB --- XXXXX-OEM-8992752-30008 --- HP
273P4-GQ8V6-97YYM-9YTHF-DC2VP --- XXXXX-OEM-8992752-30169 --- LENOVO/IBM
22P26-HD8YH-RD96C-28R8J-DCT28 --- XXXXX-OEM-8992707-00153 --- LENOVO/IBM
2W4DJ-JFFJV-DMCPP-2C3X8-883DP --- XXXXX-OEM-8992707-00121 --- MSI
2XGHP-9TQK2-8CF28-BM2P2-8FRX8 --- XXXXX-OEM-8992752-30269 --- NOKIA
PV9BD-YBRX6-CTMG6-CCMJY-X8XG7 --- XXXXX-OEM-8992752-30013 --- SAMSUNG
32J2V-TGQCY-9QJXP-Q3FVT-X8BQ7 --- XXXXX-OEM-8992707-00016 --- SONY
TGBKB-9KBGJ-3Y3J6-K8M2F-J2HJQ --- XXXXX-OEM-8992752-30015 --- TOSHIBA
7W842-2HCPJ-BC3MJ-B79K6-TD2HQ --- XXXXX-OEM-8992752-30214 --- VILIV

CD Keys for Microsoft Windows 7 Home Basic (OEM-8992752)

MB4HF-2Q8V3-W88WR-K7287-2H4CP --- XXXXX-OEM-8992752-50004 --- ACER/GATEWAY/PACKARD
89G97-VYHYT-Y6G8H-PJXV6-77GQM --- XXXXX-OEM-8992752-50005 --- ASUS
36T88-RT7C6-R38TQ-RV8M9-WWTCY --- XXXXX-OEM-8992752-50258 --- DELL
DX8R9-BVCGB-PPKRR-8J7T4-TJHTH --- XXXXX-OEM-8992752-50008 --- HP
22MFQ-HDH7V-RBV79-QMVK9-PTMXQ --- XXXXX-OEM-8992752-50213 --- LENOVO/IBM
2P6PB-G7YVY-W46VJ-BXJ36-PGGTG --- XXXXX-OEM-8992752-50013 --- SAMSUNG
9DBMT-GXRWM-6Q9Y3-WMYM8-FJCBW --- XXXXX-OEM-8992752-50165 --- TONGFANG
2TY7W-H4DD4-MB62F-BD9C3-88TM6 --- XXXXX-OEM-8992752-50179 --- ?????
YV7QQ-RCXQ9-KTBHC-YX3FG-FKRW8 --- XXXXX-OEM-8992752-50014 --- ?????

CD Keys for Microsoft Windows 7 Home Premium (OEM-8992687)

VQB3X-Q3KP8-WJ2H8-R6B6D-7QJB7 --- XXXXX-OEM-8992687-00006 --- ACER/GATEWAY/PACKARD
38JTJ-VBPFW-XFQDR-PJ794-8447M --- XXXXX-OEM-8992687-00304 --- ADVENT
2QDBX-9T8HR-2QWT6-HCQXJ-9YQTR --- XXXXX-OEM-8992687-00007 --- ASUS
7JQWQ-K6KWQ-BJD6C-K3YVH-DVQJG --- XXXXX-OEM-8992687-00118 --- ASUS (Eee)
6RBBT-F8VPQ-QCPVQ-KHRB8-RMV82 --- XXXXX-OEM-8992687-00095 --- DELL
C6MHH-TRRPT-74TDC-FHRMV-XB88W --- XXXXX-OEM-8992687-00009 --- FUJITSU
39QDH-D7MHH-WDMTD-TM2R9-KM7DB --- XXXXX-OEM-8992687-00258 --- HCL
4FG99-BC3HD-73CQT-WMF7J-3Q6C9 --- XXXXX-OEM-8992687-00010 --- HP
27GBM-Y4QQC-JKHXW-D9W83-FJQKD --- XXXXX-OEM-8992687-00249 --- LENOVO/IBM
38GRR-KMG3D-BTP99-TC9G4-BBDJJ --- XXXXX-OEM-8992687-00174 --- LG
2P2P9-CM3F8-FTV6P-PC7CX-8TFF7 --- XXXXX-OEM-8992687-00093 --- MEDION
4G3GR-J6JDJ-D96PV-T9B9D-M8X2Q --- XXXXX-OEM-8992687-00246 --- MSI
CQBVJ-9J697-PWB9R-4K7W4-2BT4J --- XXXXX-OEM-8992687-00015 --- SAMSUNG
HWDFB-YVFG4-3TJ7F-Q3WMT-7B6PH --- XXXXX-OEM-8992687-00138 --- SIRAGON
H4JWX-WHKWT-VGV87-C7XPK-CGKHQ --- XXXXX-OEM-8992687-00016 --- SONY
6B88K-KCCWY-4F8HK-M4P73-W8DQG --- XXXXX-OEM-8992687-00057 --- TOSHIBA
6GF36-P4HWR-BFF84-6GFC2-BWX77 --- XXXXX-OEM-8992687-00017 --- TOSHIBA
2XPWB-Q64BJ-W8CT3-WJTWT-4DQ99 --- XXXXX-OEM-8992687-00267 --- ?????
TTJQ7-4PFJC-6JFJ8-B22VD-VXW88 --- XXXXX-OEM-8992687-00013 --- ?????
2Q93T-7QPXK-X4HF8-W3JJG-J9TP7 HP DM3-1039WM

CD Keys for Microsoft Windows 7 Professional (OEM-8992671)

YKHFT-KW986-GK4PY-FDWYH-7TP9F --- XXXXX-OEM-8992671-00004 --- ACER/GATEWAY/PACKARD
2WCJK-R8B4Y-CWRF2-TRJKB-PV9HW --- XXXXX-OEM-8992671-00407 --- ASUS
32KD2-K9CTF-M3DJT-4J3WC-733WD --- XXXXX-OEM-8992671-00524 --- DELL
PT9YK-BC2J9-WWYF9-R9DCR-QB9CK --- XXXXX-OEM-8992671-00007 --- FUJITSU
74T2M-DKDBC-788W3-H689G-6P6GT --- XXXXX-OEM-8992671-00008 --- HP
237XB-GDJ7B-MV8MH-98QJM-24367 --- XXXXX-OEM-8992671-00437 --- LENOVO/IBM
GMJQF-JC7VC-76HMH-M4RKY-V4HX6 --- XXXXX-OEM-8992671-00013 --- SAMSUNG
H9M26-6BXJP-XXFCY-7BR4V-24X8J --- XXXXX-OEM-8992671-00014 --- SONY
2V8P2-QKJWM-4THM3-74PDB-4P2KH --- XXXXX-OEM-8992671-00137 --- TOSHIBA
862R9-99CD6-DD6WM-GHDG2-Y8M37 --- XXXXX-OEM-8992671-00205 --- ?????
2W3CX-YD4YJ-DF9B2-V27M6-77GMF --- XXXXX-OEM-8992671-00503 --- ?????

CD Keys for Microsoft Windows 7 Ultimate (OEM-8992662)

FJGCP-4DFJD-GJY49-VJBQ7-HYRR2 --- XXXXX-OEM-8992662-00006 --- ACER/GATEWAY/PACKARD
VQ3PY-VRX6D-CBG4J-8C6R2-TCVBD --- XXXXX-OEM-8992662-00008 --- ALIENWARE
2Y4WT-DHTBF-Q6MMK-KYK6X-VKM6G --- XXXXX-OEM-8992662-00173 --- ASUS
342DG-6YJR8-X92GV-V7DCV-P4K27 --- XXXXX-OEM-8992662-00400 --- DELL
MHFPT-8C8M2-V9488-FGM44-2C9T3 --- XXXXX-OEM-8992662-00010 --- HP
22TKD-F8XX6-YG69F-9M66D-PMJBM --- XXXXX-OEM-8992662-00497 --- LENOVO/IBM (Original)
6K2KY-BFH24-PJW6W-9GK29-TMPWP --- XXXXX-OEM-8992662-00537 --- LENOVO/IBM (Re-released)
49PB6-6BJ6Y-KHGCQ-7DDY6-TF7CD --- XXXXX-OEM-8992662-00015 --- SAMSUNG
YJJYR-666KV-8T4YH-KM9TB-4PY2W --- XXXXX-OEM-8992662-00016 --- SONY
2WX6M-X2HKM-86X8X-2QD44-F3FGJ --- XXXXX-OEM-8992662-00481 --- ?????