what is the windows visa system

It seems there might be a little confusion in the question. Windows Vista was an operating system developed by Microsoft, not a "system" related to Windows. Here are some key things you should know about Windows Vista:

1. Release: Windows Vista was released on January 30, 2007.

2. User Experience: It introduced several user experience improvements, such as the Aero graphical interface, which brought more visual depth and effects.

3. Features: New features included the redesigned Start menu, a search feature that was integrated throughout the operating system, and new networking tools.

4. Security: Enhanced security features were introduced, like User Account Control (UAC), which helped prevent unauthorized changes to the system.

5. Compatibility: Despite its many new features, Windows Vista faced compatibility issues with some hardware and software, which led to mixed reviews.

6. Support Lifecycle: Microsoft discontinued support for Windows Vista on April 11, 2017, which means no more updates, including security patches, are provided.

For current systems, it is generally recommended to use a more recent version of Windows that is still supported by Microsoft to ensure the best security and compatibility with modern hardware and software.