Product Key Windows 7 Ultimate 64 Bit Build 7600 Install Guide

You can skip this step during installation to enter the "30-day grace period." However, you must enter a valid key eventually to avoid restricted functionality and "Non-Genuine" watermarks. Activation and Genuine Windows

Use Windows 7 Ultimate Build 7600 only on: product key windows 7 ultimate 64 bit build 7600 install

Preparing for installation