My name is Ananth and I work for the Social Media and Community Team at Dell. Regarding your Dell Lpatop not booting ON. I would request you to Turn OFF the laptop through a hard shutdown, i.e, PRESS AND HOLD the POWER BUTTON on the laptop for 10 secs. After you see all the lights turned OFF on the laptop, unplug the power cable and disconnect the battery from the laptop. Now press and hold the POWER button on the laptop for 3 mins. Reconnect the battery, power cable to the laptop and turn it ON. CHeck for error message and reply back to the post.
Global SMaC (Social Media and Communities)