Hard Reset SAMSUNG N5120 Galaxy Note 8.0 LTE

First method:

1. Make sure, that your tablet is on.
   
2. Afterwards from the Home scren tap Menu -> Settings -> Backup & reset -> Reset device ->Erase everything.
3. Then accept all informations on your screen, and wait until your tablet will reset and reboots.
4. That's all.

Second method:

1. Check that your device is off.
   
2. Now hold and press this buttons: Volume Up + Home button + Power button until you seeRecovery mode menu.
   
3. Then select option "wipe data / factory reset" using Volume buttons to browse and Power button to confirm your choice.
   
4. Next accept option "Yes -- delete all user data".
   
5. Accept operation "reboot system now".
   
6. Good job!

WARNING !
Hard Reset will erase all of your data
All described operations you are doing at your own risk.