try download latest CM10 and reflash it . Make sure follow the steps correctly :)
How to Install::
Download the ROM
Put it on your phone root
Reboot In Recovery(MAKE A BACKUP BEFORE DOING ANYTHING!)
Wipe Data/Cache,Wipe Cache,Wipe Dalvik Ca...
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?