Yoga 13 Network Adaptor has disappeare​d...???

Hi all,
I've had my Yoga 13 for about two months (and have loved it), until this morning, when the network adapter disappeared. I was working upstairs, shut the laptop, brought it downstairs, opened it and was greeted with no wireless networks. Troubleshooting informed me that this was because Windows cannot detect a properly installed network adapter. This is on Windows 8.1.
I have tried:
1) Checking airplane mode etc
2) Looking in Device Manager to see whether the network adapter is still there (it isn't)
3) System Restore (no effect)
4) Installing the latest driver off the lenovo website (no effect)
Completely stumped by this other than guessing the network card is broken - which I'm not too happy about after only two months. Other laptop in the house is working absolutely fine on the network.
Thanks for any ideas you might have!

I'm experiencing this exact problem on 2 different Lenovo Yoga Pro 2 notebooks. I've been in contact with Lenovo support, but all they can come up with is resetting the notebooks using the OKR-button. I've read in several forums that that didn't fix the problem, so I'm not planning to reset the machine; it will cost me a lot of time installing all software again.
Anyone experiencing this problem and tried de-installing other software / drives that might confict with or influence the standard adaptor drivers Lenovo has installed?
We, for example, are using a kensington sd3000v docking station for connection a display and networkcable. Perhaps its driver may have anything to do with this problem. 

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