Unplug it from mains supply socket.
Wait one minute.
Plug it back in.
If still nothing except power-on light, it may be faulty.
Try a different router, try to borrow one just for testing purposes before you buy another one.
Unplug it from mains supply socket.
Wait one minute.
Plug it back in.
If still nothing except power-on light, it may be faulty.
Try a different router, try to borrow one just for testing purposes before you buy another one.