Dropping a camera with the lens extended often results in the lens housing being bent or the extend/retract gearbox jumping a cog. This usually requires repair by the camera manufacturer.

You probably can't turn-on the camera because the lens is not in its home position.
You can try putting the camera on its back (LCD down) and gently pressing on the front of the lens housing.
This might restore the lens to it home position.

Repeat - gently

Good Luck!