Hard Reset SAMSUNG N5110 Galaxy Note 8.0 WiFi

First method:

1. Switch on your tablet.
   
2. Then scroll to Menu -> Settings -> Backup & reset -> Reset device -> Erase everything.
3. Now wait until your tablet will reset and restarts.
4. Success!

Second method:

1. Power off your device.
   
2. Next hold and press together Volume Up + Home button + Power button.
   
3. Then you will see Recovery mode menu.
4. Now from this menu select option "wipe data / factory reset" using Volume buttons to navigate and Power button to accept your choice.
   
5. After that choose option "Yes -- delete all user data".
   
6. In the end select "reboot system now" to reboot your device.
   
7. Finito!

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