This is from console where i accessed the interfaces

rederick@frederick-G750JW:~$ gedit /etc/network/interfaces

** (gedit:3878): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-xyO5kXMsa1: Connection refused

And this is the actual file

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback