Hello and welcome to Android Forums. Hopefully I can help you with your problem.
If you using TWRP or CWM, I would start with a factory reset, wipe cache, and wipe Dalvik cache. Then go in and fix permissions.
If you've managed to root w/o TWRP or CWM, just do a factory reset.
Try these methods. If you still cannot access then start a new thread stating all methods you have tried to fix the issue. Then we will have some info to go on when we troubleshoot.
Thanks
If you have any other questions regarding your device, I invite you to join Android Forums. We have many sections for specific devices which contain a wealth of information.