Dell G15 Special Edition 5521 AC Power - Game Issue

Hi all,

My laptop is

Dell G15 Special Edition 5521

12th Gen Intel(R) Core(TM) i7-12700H

NVIDIA GeForce RTX 3050 Ti

Issue

1. When launching any game, the AC power will stop working & abruptly shutdown the computer (while playing game)

2. Even after restart the computer, still the same (AC power not working).

3. Only back to normal function after I shutdown computer & detach power cord and wait for some time before power on.

4.  As long as I don't launch any game, the AC power is working fine without any issue.

Thing I did before this happen

1. Never been gaming since I bought it.

2. Recently started gaming. At first no issue.

3. Updated Nvidia driver to latest one.

4. Start having this AC power issue and I roll back to old Nvidia driver but the problem remains

Is there a way to troubleshoot the root cause or solve it?

Note: Bios is updated to latest version