Windows 7 Home Premium SP1 (64-bit) (OEM) from Microsoft is the long-awaited successor to the ubiquitous Windows Vista operating system. Building upon Vista's impressive feature set, Windows 7 adds many features which simplify the way you use your PC, as well as the way that your PC connects to the world.
The Home Premium edition of Windows 7 is designed to meet the needs of the modern home. Designed with entertainment and Internet use in mind, the OS features improved desktop navigation, improved speed, the Internet Explorer 8 web browser, Windows Media Center, and HomeGroup networking. This version is meant to be installed on 64-bit systems.
Note: The OEM (Original Equipment Manufacturer) version of Windows 7 can only be used with a single PC, and the license is non-transferable. Additionally, the software can't be used to upgrade a current version of Windows; it requires you to backup any data on your machine before you install it.
SP1 / Service Pack 1 is a Windows update package that helps make the software more reliable. It includes previously released security, performance and stability updates for Windows 7. SPI provides improvements to features and services in Windows 7, including better reliability when connecting to HDMI audio devices, printing with the XPS Viewer, and restoring previous folders in Windows Explorer after a restart.