Hi masters! Can you help me fix this issue?

I have ideapad 120s-14iap power turns on but no display on screen. I tried external screen but still the same. I also try removing all peripherals batt, sub board, tpad, speakers, keyboard then boot it but still not getting display on screen. Even bios reflash but still the same.

mobo: 120s_mb_v1.0 svt