Check the power cords and see if the wires are connected properly and switch on and run a test print. See if your router is working properly set it off and switch it on again. Sometimes you might have to log into the wifi network by forgetting the network. When the printer shows that it is able to recognize your wifi network you have to enter the router password and this will connect your printer to the Internet. Call at Dell Printer Technical Support Phone Number of their printer customer support team to resolve the problem and get meaningful solutions in the shortest possible time.
Check Out :- http://www.printer-phone-number.com/dell-tech-support.html