The Qualcomm Atheros QCA61x4 Wireless Network Adapter of my laptop have gone wrong for some time. My laptop couldn't detect any wireless networks at all. At first, I managed to fix this problem by uninstall it and then scan for hardware changes in Device Manager, it used to work normally again. However, this method doesn't work anymore recently. So I tried to uninstall it and replace it with another Network Adapter which I downloaded from Acer official website, somehow, the problem was solved. BUT same problem happens again now. I wonder whether this is a serious problem that I have to send my laptop to technician for repair...Is there anything I can do to fix it by my own?