Hello,
I put, my rom (fba) with bios, but the rom doesn’t seems to be recognized. Any idea to fix it ? I use the last version of Lakka on a PI zero.
Thank in advance 
We would need a log to see what’s going on to know for sure, but the most common issue is using the wrong ROMset. Search online for ‘fba roms’ and the first hit should have the ones you need.
Next, for neogeo, put your neogeo.zip in the same directory as your ROMs. It’s considered a BIOS but it’s really more like a parent ROM.
Thank you it’s working, i think it was a wrong bios, a change the bios and it’s work.
Edit: How can I acces to logs files ?