To get OpenGL 3.1 on Windows 7 64-bit, you don't download it as a standalone program. OpenGL is an interface that comes bundled with your graphics card drivers
If you are looking for this download, you are likely trying to fix a "Pixel format not accelerated" or "OpenGL version not supported" error. You should not look for a standalone "OpenGL 3.1" installer; instead, visit the official website of your GPU manufacturer ( Opengl 3.1 Download Windows 7 64 Bit
To successfully run OpenGL 3.1 on Windows 7 64-bit, ensure you have: To get OpenGL 3