Originally Posted by
PTravel
Go into Device Manager. Uninstall the wifi adapter (do not delete the drivers). Let it re-install automatically or, if it doesn't, select search for new hardware. That usually works for me.
I will try this when I get out of my next meeting.
Originally Posted by
sbm12
If you are seeing ad-hoc but not infrastructure networks the problem is most likely the setting in the NIC config, not the radio itself or the drivers.
In the network CP right click on the Wireless Network Connection and choose properties. Then click on the Wireless Networks tab. At the bottom there should be a button that says Advanced. Click on it. There are three radio buttons in that dialog. Which one is selected? You want it on one of the top two.
The top one is currently selected. I changed it from the second button per the suggestion of
PiotrVolkov above.