If your network adapter shows up in the Device Manager but doesn’t show up in the Network Connections, try to uninstall and re-install it. You may need to check your NIC on another computer (if possible) or check its functionality at the service center (it may be broken). Then check that your network card is physically connected to your computer/laptop and is enabled in BIOS/UEFI settings.
If the list of network adapters is empty and there are no unknown devices on your computer, search for the devices in the Device Manager (Action -> Scan for hardware changes). Thus, you can identify your NIC, download, and install its driver. For example, PCI\VEN_14E4&DEV_43A0 is Broadcom wireless network adapter. Find the VID and PID of the unknown device (Properties -> Details -> Hardware IDs). If Windows could not detect a device, you need to identify it manually. Windows should detect the device and install the appropriate drivers. Diagnosis: Check the Driver Model of the current Display Adapter Driver Software Press and hold the Windows Key then press the R key to open the Run Command. Try to perform an automatic driver search. Make sure that automatic driver updates is enabled in Windows.
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