turning on issue, star problems

Hello i have a DELL INSPIRON 15 3000 SERIES.. I started using it from october 2017... I have no problem using it until this today 31/01/2019. It just wont turn on... When the adapter is plugged the charging LED opens but later the light will disappear.. I already tried the 30 seconds power press without the battery and the adapter to release the stock power.. But it still doesn't work,,, I'm confused because why push the start button the led light opens and disappear, the ventilator doesn't turn, the screen show black light and disappear also, any help please or suggestions... please and thanks