To Resolve this problem.you have to flash your mobile.
How to flash your mobile :
1.You have to download flash file and adb driver using below link.
Adb driver link
Flash file link
2.install adb driver on your computer
3.Hold volume up botton and connect usb cable to enter into CSC fastboot mode.
4.then copy and paste flash file to local disk C:/adb folder
5.after paste click flashall_AFT to flash your device.
How to flash your mobile :
1.You have to download flash file and adb driver using below link.
Adb driver link
Flash file link
2.install adb driver on your computer
3.Hold volume up botton and connect usb cable to enter into CSC fastboot mode.
4.then copy and paste flash file to local disk C:/adb folder
5.after paste click flashall_AFT to flash your device.
