
Originally Posted by
Lefteris_D
If the emulator does not recognize the roms then there has to be a problem with the rom. Try to download the rom again, preferably from another location.
Also if you know how to use rom checking tools, you should try validating the rom using something like clrmamepro and a dat file. That will definitely show you if the roms are bad or not. If you never used such a program before to validate roms you might as well go ahead and redownload the roms as the programs may be a bit hard to figure out the first time.