Xbox One liga sozinho depois de desligado [Xbox One turns on alone after off]

Try power cycling the console by holding the power button on it for 10 seconds till it shuts down to see if that helps.

vou tentar depois aviso

[Translation - I'll try after warning]

Hey there L.Fernando1,

Thank you for letting us know about the issue and for marking the answer. We'll be locking the thread as the issue
has been resolved. If you ever require any help with any other issues please feel free to come back to the Xbox Forums for further assistance. For those reading this thread
and if the troubleshooting steps listed above didn't help resolve the issue, please feel free to create a new thread asking for assistance.

Thank you and have a great day!

Try power cycling the console by holding the power button on it for 10 seconds till it shuts down to see if that helps.

Power-cycle your console. Press and hold the power button on the front of the console for several seconds. You will hold it down until the console turns itself off. After the console has been turned off for 20 seconds, restart it and try again.

Translating to Portuguese using bing.com/translate:

Desligue e religue seu console. Pressione e segure o botão de alimentação na parte dianteira do console durante alguns segundos. Você vai segurar até o console desliga sozinho. Depois que o console foi desligado por 20 segundos, reinicie-o e tente novamente.

Hey there zGabewz,

Thanks for reaching out to the Forums for advice on how to deal with this problem. I can totally understand how that could be pretty distressing. Have you tried other HDMI cords or televisions? I also recommend making sure that your console is directly plugged
into the wall outlet while on.

If those things have been tried, I suggest trying a soft factory reset
of the console (the kind that let's you keep your games & apps).
However if that does not work, you might have to consider replacing your console.

Hope this was helpful.

Thanks for reading!