Does the soft reset work? Settings, etc.
Sometimes I find folk with a dead tablet and they are trying the hard reset but it's just dead.
-> Be sure that any SIM or memory card is removed as well as it having a full charge. If the tablet is dinged up from drops that is always a sign it won't come back.
my galaxy s3 mini will not hard reset using the volume up,home and power buttons on power up. Help