Windows 7 RTM is now officially signed-off by Microsoft and quietly leaked on the Internet. If you are in a mood to download the RTM before the actual release date, then you must be assured of some signs.
Some of leaked Windows 7 builds pretend to have malicious code integrated into them. That’s why you must check a build before installing as if its free of any issues. The CRC code and SHA-1 checksums can help you ensure if a build is real or fake.
Windows 7 Original CRC & SHA-1 Checksums:
- Windows 7 Retail Ultimate English (x86)
Name: 7600.16385.090713-1255_x86fre_client_en-us_Retail_Ultimate-GRMCULFRER_EN_DVD.iso
CRC: 0xC1C20F76
SHA-1: 0×5395DC4B38F7BDB1E005FF414DEEDFDB16DBF610 - Windows 7 Retail Ultimate English (x64)
Name: 7600.16385.090713-1255_x64fre_client_en-us_Retail_Ultimate-GRMCULXFRER_EN_DVD.iso
CRC: 0×1F1257CA
SHA-1: 0×326327CC2FF9F05379F5058C41BE6BC5E004BAA7 - Windows 7 Retail Ultimate E English (x86)
Name: 7600.16385.090713-1255_x86fre_cliente_en-us_Retail_UltimateE-GRMCEULFRER_EN_DVD.iso
CRC: 0×953EFBCC
SHA-1: 0xBC10F09B86DCBAF35B31B0E6FBA7D006ACAAD28D - Windows 7 Retail Ultimate E English (x64)
Name: 7600.16385.090713-1255_x64fre_cliente_en-us_Retail_UltimateE-GRMCEULXFRER_EN_DVD.iso
CRC: 0×77BE890E
SHA-1: 0×029DCCEDD7691206010F84CE58343405A4DA92C9
You need to compare and match these hashes exactly with your download Windows 7, to check/verify if you have a proper aka real build or not ?
Use this post: HashOnClick – Calculate & Verify Hash values of a file
Update: You can also use Windows 7 ISO Verifier by Long Zheng, which is the easiest way to check and verify your Windows 7 builds.
Download Windows 7 ISO Verifier (EXE, 253KB)
