Many launch issues are caused by missing backend files. It is highly recommended to install the Visual C++ Redistributable All-in-One to ensure all executables run correctly. Lightgun & Controller Support
Open TeknoParrot UI and select The House of the Dead 4 from the game list.
In the game settings, point the "Game Executable" to your ROM's .elf file (usually located in disk0\elf\hod4M.elf ).