Following from NVIDIA. "There won't be any Windows 10 drivers for that discontinued GPU, the last driver (270.73) which dates back to May 2011 was only certified for Windows 7. The FX3400/4400 is based on a variant of the NV45 architecture used in the GeForce 6 series which dates back to 2004 (that's over 10 years FYI), you honestly can't expect driver support for such an ancient GPU.  The last driver should still work with Windows 10 but don't expect any official support or bug fixes/new features. In any case, you should get a modern graphics card.