WiFi adapter driver is missing

Mine is a DELL Inspiron 5379 laptop. Windows 10 installed. Its Wi Fi is not working. I think Wireless adapter driver is missing There is no icon or related signs displayed by the machine. I tried to install it from the DELL web site. Qualcomm-QCA61 4AQCA9377 Wi Fi and Bluetooth driver. It was not successful.  Not listed in the Device manager too. Please help to resolve this issue.