Problem with Intel Network Card 7260

I have a Clevo W150ERQ with an Intel Dual wlan/bluetooth network card AC-7260. A week or so ago I updated to windows 10 doing a clean install. I noticed right away that the bluetooth would randomly just turn off or would drop the connection to my bluetooth mouse. Sometimes the mouse would reconnect right away, other times I would have to use the physical buttons to turn off, then turn on the laptop bluetooth in order for the mouse to reconnect.

This happened sporadically and all drivers were up to date. The problem was annoying enough that I thought I would try to uninstall the device in device manager, take the network card out, restart windows, shut down, re-install the network card and let windows re-install the card drivers etc. However, when I put the card back in the computer the wlan is not recognized by the computer. The device does not show up under network adapters. But very strangely, the bluetooth DOES work and shows "Intel Wireless Bluetooth" in device manager.

I was careful to make sure the wires are connected properly. There are three wires labeled "ww1" "ww2" and "ww3". "ww3" was not originally used. (What is that ww3 wire for?)

How can it be that the bluetooth shows up but not the wifi? I should also say that I have a spare Intel 7260 card that I installed and it too did not work. I know that both network cards work (tested in another computer). So the problem has to be with the Clevo computer, either software or hardware.

Any advice is much appreciated.

 

Update: I have an image backup on a second hard drive, and when I swapped out the hard drives the wireless card was still not recognized by the computer. So I know that the wireless card itself works fine because it works in a separate computer. I also now know that it is not a driver/software issue because with the backup hard drive in place the wireless card was still not recognized, even though it had been working just fine before. So it seems apparent to me that the problem is a connection problem between the wireless card and the motherboard, or the MB itself.

It should also be noted that I recently installed a new CPU, but the wireless card was working fine for a week after the CPU was installed. Any ideas where I should be looking for a loose connection etc? The wires connecting the card seem fine.