You may be on a computer that is too far away from the Wireless ASDL2+ Router. Try moving closer to the Wireless ASDL2+ Router and repeating the scan procedure.
Using a wired connection, start a Web browser.
In the location or address line of your Web browser, type 192.168.1.1 to log on and access the router configuration pages.
Click Setup on the Wireless menu and
verify Broadcast network name is selected.