My device won't go to sleep

When the device times out after the screen is inactive or when I try to put it to sleep with the power button, the screen goes black and then it displays a looped video advertising the tablet. The brightness for it is all the way up, and it lessens the battery life a ton. Is there some way to turn this off?

Answer this question I have this problem too

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Mine just started doing this too. Very annoying. Need some help.

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I don't have an answer,however mine is having the same issue.so, I'm looking for an answer answer!

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