Laptop turns ON when unplugged

What model computer and which operating system? When you unplug the adapter, the internal battery runs the computer. The computer might not be turning off completely.

Did you find a solution to this brother?
I'm having the same issue on my dell Inspiron 15 3000 series. Running on windows 10 version 2004. This issue started only after updating windows to the latest version. Please provide me a solution of you happen to find out.

roll back to 1909 before your 10 days is up.https://www.tenforums.com/tutorials/4097-go-back-previous-version-windows-windows-10-a.html

Had my XPS for 2 days and I have the exact problem, stays shutdown when plugged in, restarts when you u plug it. Just curious,What did they do to solve it?

My XPS When plugged in, shuts down as it suppose to, when unplugged, it shuts down then restarts 

This sounds to me like you all have fast start up still in use, and then something in your system is looking for an update or trying to stay connected to a One Drive or simular program.

Turn On or Off Fast Startup in Windows 10 | Tutorials (tenforums.com)

Fast start is the default setting for shut down. as windows is installed This is actually a Hybrid Sleep mode

Once you have a complete shut down that should stop the restarting.

If you need to keep the fast start up you'll have to find out which programs are allowed to restart your computer from sleep mode and put an end to them doing that.

You may have to change setting in your BIOS as to what is allowed to restart your computer automatically