I had this same problem within a year after purchasing my Dell 15 5567. A new Dell charger didn't fix it. Luckily laptop was still under warranty and sent it to Dell and they replaced the system board. Now 5 years later laptop has same issue again and not under warranty however it turns out the charger was bad this time(verified this by taking my laptop into an electronics store that sells Dell laptops and plugged in the charger powering the display model and it started charging). Also I bought a generic charger and it works fine(Insignia brand from BestBuy).Symptoms of the charger going bad was having to unplug/plug in cord multiple times or twist the connector in the socket until it started charging.