I am having the problem that most times that I plug in a USB device, my wi-fi in the Asus Zenbook UX31E will turn off (not disconnect, but turn off with the red x over the wireless icon in the task bar), as per the diagram after step 7 in the diagram below:
Another thing to note, the light on the F2 button (which has the wireless icon) is still lit when the wireless deactivates. I am always careful to not press Fn and F2 when inserting the USB device.
I reactivate it through right clicking the wireless icon and performing the troubleshooting steps - most of the time, this is quick.
Other information that may be relevant to this question:
Operating system: Windows 7 Home Premium 64-bit SP1
Wireless adapter (internal): Atheros AR9485WB-EG Wireless Network Adapter
I have had the laptop for 2 years and have had no mishaps (drops etc).
I have checked the questions and answers to Wi-fi turns off randomly, Wi-Fi connection turns off all the time and Wi Fi keeps going on and off - but these do not address the problem I am having.
Answer
As of this post, two people have posted some great possible solutions.
If those don't work, or you want to try something else first, try attaching only one very low power USB device into the port (such as a USB flash drive, but not a mechanical drive). See if your Wifi still works. If it does, that would indicate that it is a power issue, and that the power drain from your USB port is causing your Wifi adapter to fail. It's an easy-to-check possibility.
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