I tried to root my phone with Kingoroot, it said successful then I update my system through a notification of update on the notification bar. The next thing I know is my phone can turn on, I can see the booting scene but then it is all black, after a research all over the Internet, I put it into stock recovery mode and the only thing I want now is to get it back, running, I dont have any valueable informations, pictures, etc. so I really need help 
