Is your phone switching on?
Is your physical buttons working (power, volume, quick access buttons)?
Is your phone charging if is connected?
Is your screen responding any touches?
You can always flash your system with SPFT.
Also you can use OTG wire and perform factory reset or you can access to recovery mode and perform factory reset.
Super, MAX and Plus factory data reset in recovery: 1. Press and hold the volume-up and power buttons together until |