Go into System Properties, Hardware, Device Manager. Then go into Network Adapters, right click Atheros Wireless Network Adapter and choose Properties. In properties go to the Advanced tab, click on Power Save Mode and turn it off! No more issues since I turned it off and it even reactivated my wifi! I have not tried/tested the Normal setting yet, but it may also work. Apparently the power save feature of the network card glitches out and you can disable that useless feature.
what worked for me was to get and install the new driver .then go to device manager and uninstall the driver and reboot the system. the new updated driver will be recognized once the plug and recognizes that a new adapter has been installed.
clipped from: www.amazon.com