Hard Reset SAMSUNG I8750 Ativ S

1. At the beginning check your battery if it is charged.
2. Next please turn off your phone.
   
3. Then press and hold together Volume Down + Power button.
   
4. After your phone vibrates, then release only Power button.
5. Release rest of holded buttons, when you see on the screen "!".
6. Now press the next buttons: Volume Up -> Volume Down -> Power button -> Volume Down.
7. Wait a moment, because now will start the hard reset process.

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