Please tell me the format of the rom.
(In case of zip format, please tell me the files and extensions inside)
If you can’t install artwork, use mgw format roms as I said in the first answer.
(If you use mame rom, separate artwork is required)
The original questioner didn’t answer the game name nor the format of the rom.
(In the case of mame, several types of artwork can be selected)
(In the case of lr-mame, it could not be set well)