Non Functional Wireless Adapter: Visible and Functional According to Device Manager Doesn't Appear in IPConfig

Hi all,
This one has me completely lost. The user normally connects via a USB wireless adapter, which stopped working a few days ago apparently of its own accord. The device is detected and reported as working by both Device Manager, and the Network Connections
menu, however it doesn't appear at all in ipconfig- Not even to say that it isn't connected to anything. When I try to connect to a network, it reports no connections available as if it was out of range. However, I'm sitting right under a known working access
point.
The device is enabled in devmgmt, there is no physical switch to disable it, and the adapter itself is tested as working both on different hardware running Windows 7 and 8, and the same hardware running Slax Linux. Wired connectivity to the affected machine
appears to be fully functional, which leads me to discount the TCP/IP stack.
I've tried the default PnP driver, the driver that came with the device on a mini-CD, and the latest driver from the manufacturer. I've also tried a completely separate USB wireless adapter, made by a different manufacturer, which proved to have the same
problem with identical symptoms.
I've been through power settings, it is set to Maximum Performance as per the default. I've checked the WLAN autoconfig service, which is running and starting automatically as it always has. I've even checked registry settings suggested elsewhere on technet,
and those are fine. System restore produced no results. Virus scan came back clean.
The only two things that seem unusual are A) the fact that the adapter doesn't appear at all in ipconfig, and that Cisco AnyConnect VPN client begins complaining in the event viewer, error description "ROUTTABLE_ERROR_GETBESTROUTE_FAILED" - Presumably
due to the sudden lack of usable interfaces
With all this, I'm out of ideas. Thanks for reading, and any suggestions (even insane ones) would be much appreciated.

Hi Blexie,
According to your update, I think you have fixed it by yourself.
I am glad to hear the issue is resolved .
Thank you for share the solution.
If you have any concerns, please do not hesitate to let us know. Thanks again, and have a great day!
Regards,
Blair Deng
Blair Deng
TechNet Community Support

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