I answered similar questions in the past.
The CPU is (Bay Trail), so you may have problems with the sound.(I haven’t tried 31beta)
“failed to load com32 file menu.c32” Below this display You should see “boot:” At this time Enter verbose or batocera on the keyboard and it should start with enter. If you want to start automatically, modify syslinux.cfg Example
SAY Booting Batocera.linux…
PROMPT 1
TIMEOUT 40
DEFAULT batocera
LABEL batocera
LINUX /boot/linux
APPEND label=BATOCERA console=tty3 quiet loglevel=0 vt.global_cursor_default=0
INITRD /boot/initrd.gz
LABEL verbose
LINUX /boot/linux
APPEND label=BATOCERA vt.global_cursor_default=0
INITRD /boot/initrd.gz