Issue was resolved by reinstalling Windows after the BIOS was updated. On new installation Wifi works without problems..
Just received my brand new Inspiron 15 3511 with Realtek 8821CE wireless card. Running on Windows 10 64bit.  Wifi cannot be enabled - in the windows network properties there is the switch to turn it on - when i do it looks like it is trying to turn it on but i does not work. I am bit out of ideas now. Looks like many other ppl online have similar problem with this model. Any recommendations welcome
Inspiron 3511 - Realtek 8821CE WiFi cannot be enabled