Hard Reset SAMSUNG S5830 Galaxy Ace La Fleur

First method:

1. Make you sure, that your phone is on.
2. Then tap this code on your phone: *2767*3855#

Second method:

1. Turn off your phone.
   
2. Next hold and press Home button + Volume Up + Power button.
   
3. Then select option: "wipe data/factory reset" using Volume Down, and Power button to confirm operation.
   
4. Now choose option "yes" with Volume Down, to select and Power button to accept.
   
5. After that press Power button to enter option "reboot system now".
   
6. Success!

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