Dual band WiFi antenna

Hi. I have an Asus X542UQ-DM333T laptop and I have issues with connecting wifi networks. I have tried reinstalling the wifi driver but it didn't work. This device has a Qualcomm atheros AR956x network adapter. Is there a way to solve this without replacing the WiFi card.? If not, I have checked...

So my headset microphone was working fine and then i had to unplug it from my pc because i had to take the pc away, when i come back i plug it back in how it was and the headphones work but the microphone isnt detected by the computer and doesnt work on applications such as steam or skype, ive...