[user104658]

Originally Posted by GoldHeart

Yeah this doesn't make sense,how can the electricity be BACK ON with NO internet

Either hasn't turned the circuit the router is plugged into back on (possible if it's in a hallway, since often it'll be the only thing plugged into a socket in the hall, and overhead lights are on a different circuit) OR (worst case) there was a power surge that's either blown the fuse in the router's plug (not too much of a problem) or has damaged the router itself (will need a new one).

If the lights on the router are off it's probably one of the first two. If the lights are on but one is flashing/orange/red then it's probably a damaged router .