In Windows on the laptop with the Vigor 560 connected, please go to Control Panel > Network Connections > Wireless Network Connection. Then click on the [Properties] button.  A window like this should open :

Click on the “Wireless Networks” tab, and select the WLAN network in the “Preferred networks list”:

Now click on the [Properties] button (which will open another window) then on the “Connection” tab of the new window and you should see this:

Please ensure that “Connect when this network is in range” is ticked.