How do u fix a nobis 9 tablet when stuck on the go screen and will not

how do i fix my tablet when it is stuck on the go screen

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i need some help on the tablet nobis 9 it go on the it stop to GO witch i cannot figer out why it does it please help me on it thank you from maryann

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El tablet de mi hijo está así hace 6 meses y no existe ROM para este tablet

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