Windows 7 is a custom operating system of the windows nt familyWindows 7 is a custom operating system of the Windows NT family
Microsoft windows 8 operating system in a minimalist styleMicrosoft Windows 8 operating system in a minimalist style
Background for windows seven with the image of sevensBackground for Windows seven with the image of sevens
The logo of the eighth windows on the background of vertical blue stripesThe logo of the eighth Windows on the background of vertical blue stripes
Windows operating system logo on a black backgroundWindows operating system logo on a black background