Are you able to turn on your laptop after following the below instruction again? Follow the below instruction and leave your laptop for 10mins and then connect the power supply and if the laptop won't turn on hp. Let me know what happens when you connect the power adapter to your laptop. Is the battery getting charged?
Unplug the power Cable
Remove and Reconnect the battery
Hold the power key for 60 seconds
Connect the power supply then try to switch ON the laptop and later put the battery back into the laptop.