Touch screen & key board with stick does not respond

try aligning the screen...
settings > screen > general > Align Screen

If that doesn't work try hard reset... i.e.
press the two soft keys and the reset button using stylus...

If its still not working do soft reset:
settings > system > Clear storage
but remember to take back up of phone before doing this..as it will erase all your data...

and do tell me if it worked or not...