I would uninstall the Atheros Client Utility and see if the driver remains. If the driver remains, you can set windows to configure the wireless network settings and it should hopefully remain.
If uninstalling the client utility does uninstall the driver (which you should be able to see in device manager) then you can see if you can find a standalone driver install. or you can unpack the .exe file (with 7-zip) that contains the driver and use windows to automatically install the driver for you and point it at the set of unpacked files from the .exe.