[Q] Cyanogenmod 11 Problem topic

Hello Guys :)
i Was using Cyanogen-mod 11 on my device(Galaxy Ace3 S7272)
but i installed the stock ROM since 3 Months
but Today i tried to install Cyanogenmod11 Again ( Using CWM Recovery 6.0.5.1 )
but after installing i got a black screen then it came back to Recovery Mod
( The stock is rom works Well )
Please I Need Help and sorry for the bad English :\