Laptop turning off when plugging or unplugging in charging cord

Hi DNGUYEN2252,

Are you using an original Dell OEM Adapter? When you plug in the adapter to the system, does the adapter stay firm or does it fall off easily? Is the adapter frayed? Is there any damage on the system?

Does the adapter led stay on and stable or does it go off when connected to the system?

Disconnect the adapter and battery and press and hold the power button for 30 seconds to release any static power. Then try connecting with the adapter only / battery only.

I would first suggest you to try with another power adapter. The current one in use might be shorting the system and hence the system powers off.

If another adapter works fine, then replace the adapter. If the other adapter  also exhibits the same behavior, then replace the DC port - this is the part you would need - http://bit.ly/2kZR8go

If nothing works, I would suspect a faulty motherboard. 

If there is no warranty, then you could contact our team to get a quote for a paid service call - http://dell.to/1vnT6CQ

Also, please click my DELL-username and write me a private conversation with the service tag and your contact details(Name and Email) for case records.

Let us know if you have any other queries.