Lost Wireless Connection to Laptops

Question

I plugged the cable to the INternet on the back of the D-Link DIR-655 to ap printer and then plugged it back into the router. We now have no wireless to our laptops. We have internet through wildblue and it works on the desktop that is connected to the box.

Any ideas or suggestions? Could I have damaged the cable and would it need to be replaced? Did I lose information? I am lost!

Thanks-
Jan