Ok so, I was playing Hyrule Warriors, and I completed a stage then I noticed the GamePad's light turned red, signifying it had low battery, so I picked up the plug of the Gamepad charger then all of a sudden the TV simultaneously turned black and the gamepad froze where it was. At the same time, a loud beep/buzzing sound played, and it lasted for about 8 or 11 seconds, then the sound stopped but the gamepad remained frozen and the TV remained black, then I turned off the gamepad and nothing happened then I pressed& held the power button of the Wii-U for four seconds, turning it off, then I turned the system back on. Everything seems fine now, but is this something I should be concerned about. I am also curious as to what causes this.
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