Really better if you have just one WiFi card/adapter active/installed at a time. Un-plug or deactivate the other (either in Device-Manager or BIOS). Similarly, if using the wired-ethernet on-board NIC, be sure you are disconnected from the WiFi-Access-Point. If you never use WiFi "forget" the network (and stored password). That way, it will never inadvertently connect.
Hello, I have a very weird issue. My internal WiFi adapter started to work weird a while back (sometimes it didn't see a network). So I switched to external Netgear USBr adapter which I used for a few month without issue. This morning both of them didn't see any network ( I tried multiple tricks (like automatic network fix), but only updating Netgear driver magically fixed both adapters (after desktop restart). After I restarted my desktop in the evening, the issue re-appear again. Both of them are completely "green" (see screenshot bellow), yet no networks found. (WiFi works fine on my laptops and phone). I tried to disable Norton 360, but it didn't help.   [IMAGE]
XPS 8940, doesn't see WiFi?