24 May 2021, 22:30

@blythy79 You need to check the ROMSET of your ROMS: on all Arcade consoles, it is necessary that the ROM version corresponds to the core version, for example, the MAME2003 core will be used with MAME2003 roms, you can even work with MAME2010 ROMs and vice versa, but not in the right way.
The required ROMSETs are described here:
https://recalbox.gitbook.io/documentation/v/francais/tutoriels/jeux/generalite/les-roms-et-les-isos/les-romset-pour-recalbox
You can convert the ROMSET of your ROMS using tools like Romulus or ClrmamePro (most popular):

In addition, you need to verify that you have all the necessary BIOS, in the EmulationStation menu there is a BIOS checker, use it.