After experiencing Wireless issues I tried to upgrade my Lenovo Yoga 2 Pro 13" with Windows 8.1 64Bit to the latest drivers from the lenovo support site.
Ever since I cannot connect to the WLAN anymore. What puzzles me is that the driver status in the device manager shows a different driver version than what I have installed (uninstalling the driver and reinstalling it doesn't change anything here).
What puzzles me is the Lenovo Website shows driver version 184.108.40.206 (released 25.Jan.2014, see link below), whereas my system display version is 220.127.116.11 (dated 31.10.2013). Hence I thought I have another version from somewhere else on my and removed all driver versions I could find.
Checking driver details I get the follow file versions:
C:\windows\system32\drivers\NETwbw02.sys version 18.104.22.168 Intel, dated 2011
C:\windows\system32\drivers\Netwfw02.dat no version or publisher
C:\windows\system32\drivers\vwifibus.sys version 6.3.9600.16384 Microsoft
Still, whenever I uninstall the driver, install the files from lenovo and click "Detect new device" my system pulls the drivers as listed above and is incapable of connecting to any WiFi.
Windows 8.1. shows no connections available and doesn't connect anymore.
How can I get my WLAN back?
If Windows Update is configured to automatically fetch updates from Microsoft then the machine most likely have installed the Intel driver update for Intel(R) Wireless N-7260 as discussed in this article (which explains the different driver versions).
Below are steps that you can try:
1. If the machine comes with the Intel(R) Wireless N-7260, navigate to: