my laptop dell 15 7559 the screen goes black during working and speaker make noise if i was played song during working but the device still working the keyboard is lighted and i hear the cooling fans i bought it last august this problem apears randomly but i noticed this more when i am playing league of legends and happens with charger or not and i have to restart it from power button i updated nvidia driver but no solution this is three cases after restart

first : starts normal

second : black screen with orange and white led which is in front of lap

third : strange colors

forth : blue screen