General Information
Windows 7 is an operating system from the Microsoft Corporation. Windows 7 simplifies everyday tasks, works the way you want, makes new things possible, and is engineered by Microsoft yet inspired by the user. Windows 7 Service Pack 1 (SP1) is an important update that includes previously released security, performance, and stability updates for Windows 7. Installing SP1 helps keep Windows 7 up to date.
Availability
Please note, Windows 7 is no longer available for download from Tigerware. Microsoft will no longer be supporting Windows 7 at the end of 2019; thus you may want to consider upgrading to Windows 10.
More information on acquiring Windows 10
Referenced from: windows.microsoft.com