1.Force Restart or Reboot your iPhone
2.Charge Your iPhone Correctly, Check if the charging wire is broken or loose.
IF iPhone Gets Stuck During Startup and Screen is Black.Connect your device to a computer then launch iTunes. After your device is connected perform force restart.
Sometimes the changing problem may arise that will only allow the charge from some particular charger or maybe it only support the charge while connected to the PC, not to the wall charger.