Evv1L, 18 days ago @awesome_guy does keyboard has any logo on the left side of Space key? If no then keyboard is not backlit. Does keyboard backlit works in UEFI? It should. Also remove your keyboard using Hardware Maintenance Manual for L440 and look for backlit cable, it could be damaged or poorly connected.
@awesome_guy does keyboard has any logo on the left side of Space key? If no then keyboard is not backlit.
Does keyboard backlit works in UEFI? It should.
Also remove your keyboard using Hardware Maintenance Manual for L440 and look for backlit cable, it could be damaged or poorly connected.