Search for " NVIDIA GeForce 9500 GT Legacy Drivers " to find the last official driver version (usually in the range for Windows 7/8/10).
Since this card requires legacy software, the best approach is to use the official NVIDIA archive or a driver utility tool. skachat draivera dlia gf9500gt
You can use Snappy Driver Installer for a hassle-free, automatic installation of the best available legacy driver. Search for " NVIDIA GeForce 9500 GT Legacy
Which are you using (e.g., Windows 7, Windows 10 64-bit)? Windows 10 64-bit)?