Front headlamps not working, Nissan Micra 01?

Hello, I have a problem with my headlights not working, the side lights, indicators, brake lights and full beams working perfectly.The car was sitting up for a while and now lights don't work.I have checked the relay's at fuse compartment under dash andi think there maybe 2 more at the very back but are very awkward to get to, I don't know if I'm looking at the right area.Possibly a problem with light selection arm, bulbs look fine.Anyone out there had similar problems I would appreciate your advice.Thanks