Q: No WiFi when in Bootcamp with Windows 7

1. Yosemite and BC/Windows have no interaction with each other. They both directly interact with the hardware. Virtual Machines are different.

2. Trying drivers causes more problems than it solves. Please see Boot Camp: System requirements for Microsoft Windows operating systems - Apple Support and pick the BC Driver set that is specific to your Mac model/year. Download them to a USB2 flash drive and install/repair - Boot Camp: Install or repair Boot Camp drivers. Create a System Restore point before you try other drivers, so you can roll back to a stable set of drivers.

3. Does your ethernet connection work correctly?

4. If you have a conflict between two different connection managers/drivers, neither will let the other work properly.

5. Is this a fresh new install of Windows, which can be removed? If yes, then the worst case scenario is to remove/reinstall and use the BC drivers, before anything else is tried.

Can you post a screen shot of the Windows Device Manager, especially an 'Other Devices'? You can use http://windows.microsoft.com/en-us/windows/snipping-tool-faq#1TC=windows-7 to capture and post them. Specific devices like Wireless can be addressed, if necessary.

If you have significant work on Windows, let us see if it can be repaired without a re-installation.

1. I do not recognize 'Evolve Virtual Ethernet Adapter'. Is this a IPSec/VPN device?

2. Can you click on Driver tab for the 802.11n adapter and post the screen shot of the manufacturer/version? The following is on my 2012 13" MBP.

Based on Boot Camp: System requirements for Microsoft Windows operating systems - Apple Support the drivers for your MBP are Boot Camp Support Software 5.1.5621. Using the Bootcamp.xml file in the package, the version number is 5.106.199.1, but your screen shot shows 6.30.223.215.

<Name>Broadcom 802.11 SDIO Network Adapter Driver

  <InfName>bcmwl6.inf</InfName>

  <Class> Net</Class>

  <ClassGUID> {4d36e972-e325-11ce-bfc1-08002be10318}</ClassGUID>

  <CatalogFile>BCM43XX64.CAT</CatalogFile>

  <Provider>Broadcom</Provider>

  <DriverVer>12/13/2013, 6.30.223.215</DriverVer>

  <ServiceBinary>bcmwlhighsd5.sys</ServiceBinary>

  <HardwareID></HardwareID>

  <isX64>Both</isX64>

  </Name>

  <Name>Broadcom 802.11 SDIO Network Adapter Driver

  <InfName>bcmwl63.inf</InfName>

  <Class> Net</Class>

  <ClassGUID> {4d36e972-e325-11ce-bfc1-08002be10318}</ClassGUID>

  <CatalogFile>BCM43XX64.CAT</CatalogFile>

  <Provider>Broadcom</Provider>

  <DriverVer>12/13/2013, 6.30.223.215</DriverVer>

  <ServiceBinary>bcmwlhighsd5.sys</ServiceBinary>

  <HardwareID></HardwareID>

  <isX64>Both</isX64>

  </Name>

  <Name>Broadcom 802.11 Network Adapter Driver

  <InfName>bcmwl6.inf</InfName>

  <Class>Net</Class>

  <ClassGUID> {4d36e972-e325-11ce-bfc1-08002be10318}</ClassGUID>

  <CatalogFile>BCM43XX64.CAT</CatalogFile>

  <Provider>Broadcom</Provider>

  <DriverVer>11/13/2012, 5.106.199.1</DriverVer>

  <ServiceBinary>bcmwl5.sys</ServiceBinary>

  <HardwareID></HardwareID>

  <isX64>Both</isX64>

  </Name>

One option you can try is to uninstall the current driver and reboot and ensure that the WiFi adapter shows up in 'Other Devices' (without any drivers). Install this version and test and post back your results.

Can you check Event Viewer for messages which are within five minutes of each time you click on the WiFi adapter?

You should look for any driver loading errors. If the driver reports inconsistencies in Registry settings. Is there any software that performs firewall functions. There may be Kernel error messages about devices not powering up correctly. Windows troubleshooter also has the ability to reset the card and reload drivers, which should be tested. I have access to a W7 BC, that i want to try, but replicating your WiFi environment is the difficult part.

Can you turn off Bluetooth and test WiFi?

The driver version I have for a 802.11ac is 6.30.223.170 dated 7 Sep 2013.