Vostro 2520 wifi Driver from Dell Drivers (Win 10)

I cannot install the latest wifi driver for win10 from the download site - i.e. 1704.    I installed the 1506 driver that in Device Manager shows up as Dell Wireless 1703 802.1 (the driver date showing as 11/12/2014).  When I try to install the 1704 update it says 'The update installer operation is unsuccessful'.  Looking at the View Installation Log things look ok until it reads .... Hardware id is not found in drive inf.  Either the device is present or the device is not supported.....  This seems a little strange to me as this is a Dell laptop and Dell driver.  Any advice appreciated.   (My specific issue is not having internet access despite a connection to my router.   I need to ensure I have the latest drivers.  As per Device Manager - the date of the install driver says 11/12/2014).