Dell laptop not turning on

Hello,
I had paused YouTube to make my bed and left my laptop running and the screen went blank, thinking it had went into sleep mode i tried to boot it back up and the dell screen flashed for a few seconds and it cut out. I tried charging it and the charging light came on however my laptop wont power back on. I have tried a different power source and the trick with removing the power source,battery and holding the on button for 1-5 minutes however nothing happenes. I cant hear the fan and the charging light no longer comes on (idk if that means it fully charged or just non responsive) . Please help its only 2 years old and i have some really special abd sentimental pictures on it which i stupidly did not back up.