Inspiron 13 7375 2-in-1 running Windows 10. When not plugged into AC and the battery is ~50% or lower, the WiFi card disappears. Boot up and click on the "Network & Internet Settings" icon in the system tray and the airplane mode button is the only thing there. (It is not in airplane mode). In Device Manager the card is not shown unless "show hidden devices" is selected, but it is still grayed out. Scanning for hardware changes does nothing.
There is literally nothing else installed on the device other than the Windows 10 image from Dell and the recommended Dell drivers from the Dell Support site. It passes the Dell hardware diagnostic tool and the BIOS hardware diagnostic.
- Reinstalled Windows (a couple times)
- Checked the BIOS settings (didn’t see anything obvious)
- It happens in Safe Mode as well
- Installed the Qualcomm QCA61x4A-QCA9377 driver from the Dell support site
- Updated the Bios to 1.5.0 from the Dell support site
- Updated the AMD Chipset Driver from the Dell support site
- Updated the Dell Power Manager Service from the Dell support site
- Did *not* install the SmartByte application as a couple people mentioned it can interfere with the driver installation
- In Device Manager disabled “Allow Computer to turn off this device to save power”
- In Power Options set the Wireless Adapter Setting to be on "Maximum Performance"
- Returned it to Dell who said that they replaced both the WiFi card and the I/O daughter card
Got it back from Dell and the same problem is happening!