Microsoft Windows 7 Ultimate Original 7600 RTM Final | 3.4 GB

Windows 7 is the latest version of Microsoft Windows, a series of operating systems produced by Microsoft for use on personal computers, including home and business desktops, laptops, tablet PCs and media center PCs.
Windows 7 was released to manufacturing (RTM) on July 22, 2009, with general retail availability set for October 22, 2009, less than three years after the release of its predecessor, Windows Vista.