I wasn't aware that Atheros made network adapter cards since they are a chipset maker.
Did this hardware device come pre-installed in your computer at the time of purchase or did you purchase it later then add it to the pc?
Is it a PCI card (as stated) or is it a chip integrated on the motherboard or a notebook mini-card or an external usb device?
Used in a desktop or laptop computer?
Motherboard/Computer brand and model?
Did it come from the factory with Windows 7 installed?
You have to give up some info to get proper help.