Wireless Connection Won't Connect

Every time I turn off the Wireless modem for the night, at the first boot-up of the PC, the wireless connection cannot find a wireless network available (even though there is one). Pushing the button to connect (alone) won't do it either. Nor would do it alone, right-clicking the wireless icon (lower right corner) and selecting "Repair".

What seems to work is both pushing the button and clicking on "Repair" (or disable and enable the network adapter in Device Manager). But I have to do it every time. Any suggestion on what needs to be changed in the settings and where, to avoid this problem every time I turn on the wireless modem?
Giovanni