Elitebook 840 G2 - unable to turn on wifi - win10

[carlos_the_man]

Elitebook 840 G2.  When I turn it on the icon for network is a little sphere (world) wire frame looking thing which clearly indicates there is no network connectivity.  I click it and the WiFi is off and i click the icon to turn it on and the wireless networks appear.  Withing a second of that and before I can even click on an icon it turns off again.

I have disabled the power management so the wifi card does not go into power saver mode.  The computer then can't turn it off and rebooted the machine.  Same thing.

I used the device manager again to remove the device and even delete the driver and rebooted.  It was recognized and I made sure gain that the pc could not turn it off and still same thing.  Wifi turns off immediately.

I plugged in a usb dongle to see if that would work and maybe tell me the internal card is defective.  I tested the dongle in a pc which has no wifi card and works just fine.  Now I have both the internal card off and the dongle not working.  can't turn either one on.

Finally, I know is some configuration.  I booting into Linux and the wireless card works just fine.

I am about to just wipe the thing and put windows 10 again or just leave linux on it.  That is a last resort as this is a machine I use for supporting windows users.

Any help will be greatly appreciated.

[carlos_the_man]

Ok so I feel like a complete moron.

The solutions I searched should have fixed the problem unless the hardware was defective.

I uninstalled pcap and WiFi worked again.

I was running wire shark a while back doing some testing only on a wired network no witless.  I apologize for not noticing this before but in case someone has a similar problem check the software you have installed recently.

Thank you for reading.

[MM73]

Hi,

I have the exact same problem and went through most of the steps described by Carlos. 

After reading his solution, I also uninstalled pcap (or a version of it), even though I haven't used it or wireshark for many months. Still the same issue.

Have not installed anything recently, so looking for ideas what to try next... Thank you!