Kicad For Windows 7 -

Ensure your GPU drivers are up to date. KiCad’s "Accelerated Canvas" uses OpenGL, which can be buggy on the default "Generic" Windows 7 drivers. Can you run KiCad 6 or 7 on Windows 7?

Right-click the installer and select "Run as Administrator" to ensure it has the permissions to register system DLLs. Kicad For Windows 7

Most Windows 7 machines are 64-bit; look for the x86_64 installer (approx. 1.2 GB). Ensure your GPU drivers are up to date

Projects created in 5.1 can be opened in newer versions later if you eventually upgrade your OS. Kicad For Windows 7