encryption unsuccessful after smart av

hi team
i face 2 sets same problem in cm2

1. samsung clone i9060 mtk 6572
when done smart av and hard reset,
set screen show encryption unsuccessful
and down reset button which is not working

2. samsung clone i9082 mtk 6572
when done only smart av and not hard rest
set screen show encryption unsuccessful
and down reset button which is not working

what is the solution to bypass this screen
i try all options in cm2 none of one helped

how to get rid of this start up screen
encryption unsuccessful

Thanks in advance