Build 7600 is the "gold" master of Windows 7. While it is stable, it lacks the security updates and features found in . If you install Build 7600, it is highly recommended to update to SP1 immediately after activation to protect your system from vulnerabilities. Activation and Genuine Licenses
Usually found on a sticker on the bottom of a laptop or the side of a desktop tower.
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I wiped the dust off the bezel. Stuck to the top was a yellowing sticker: Windows 7 Ultimate, 64-bit, Build 7600. The genuine Microsoft hologram shimmered weakly under the fluorescent light.