Yes it turned out the default roms were faulty thanks for helping

Im new to modding here is a screenshot of the disksys of Bios
And what. do you mean by no intro romsets

I recently tried to install 2 Famicom Roms But It seems That both of them don't work and return me to game selection when launched

The disksys.rom BIOS has been installed on my system but it still won't run them