Call the seller or maker or check their web page on how to get service.
Most folk I know return the unit if it's not working.
i have had my chinese midi tablet fora while now, it has been grea. but only lately have i found out my wifi does not work. i looked in the system files and there i found files such as fake wifi and pather in the wifi section of the system files.
i dont know if this may be the cause of the problem but please could you help you fix this
Many thnx doodyguy