Make sure whether the battery of mp4 player has any energy. You can try to charge it with PC or a battery charger. Finally check whether the keypress is good. If these are not useful, you should contact the seller.
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Make sure whether the battery of mp4 player has any energy. You can try to charge it with PC or a battery charger. Finally check whether the keypress is good. If these are not useful, you should contact the seller.