inspiron 15 5000 series wont TURN ON!!!!!!!

this is a new laptop, the problem is that it wont turn on with the battery ( the battery has been charged), it will just turn on if i remove the battery and plug the charger in. I have searched for solution on the internet, i did try one, i removed the battery and charger, the pressed the power button 30s and then put back the battery and charger, and it turn on. I thinked this solution would fix the problem but it didnt.

Hope you will help me fix this problem forever, thanks