Next suspect - the mainboard. 

 

Hi
I have experienced the same thing with my inspiron 3543.
Have you found any solution?
Please reply asap.

Hi
I have experienced the same thing with my inspiron
Have you found any solution?
Please reply asap.

Reseating Memory could be anther thing to try....

Please enter service tag number onto the link below, you 'll see the service manuals now.... 

www.dell.com/support/home/us/en/19/Products/?app=manuals

Please check if the ID pin inside the plug or adapter port is bent, broken or damaged. Also check the AC adapter and cables (including the power cable) for signs of physical damage or overheating. Please read link below for additional information.

AC Adapter Not Powering on the Computer or Charging the ...