Windows 7 is a major release of the Windows NT operating system developed by Microsoft. It was released to manufacturing on July 22, 2009, and became generally available on October 22, 2009. It is the successor to Windows Vista, released nearly three years earlier. It remained an operating system for use on personal computers, including home and business desktops, laptops, tablet PCs and media center PCs, and itself was replaced in November 2012 by Windows 8, the name spanning more than three years of the product.



Includes

Windows 7 Starter (x86 only)
Windows 7 Starter N (EU version, x86 only)
Windows 7 Home Basic
Windows 7 Home Basic N (EU version)
Windows 7 Home Premium
Windows 7 Home Premium N (EU version)
Windows 7 Professional
Windows 7 Professional N (EU version)
Windows 7 Ultimate
Windows 7 Ultimate N (EU version)
Windows 7 Enterprise
Windows 7 Enterprise N (EU version)

System requirements

Processor: 1 gigahertz (GHz) or more.
Free hard disk space: 20 gigabytes (GB).
Graphics adapter: Microsoft DirectX 9 graphics device or higher.