You do not need to turn it on. It's already on. That is the only network connection on that model. The setting is for computers with both Ethernet and wireless.
I am unable to turn on my wifi setting on my laptop. When I go into settings and try to turn it on, it will *display* that it's turned on, but switching tabs off and back onto it will show that it's still off and hadn't turned on at all. Model is Latitude 9520, OS is Windows 10 Enterprise ver. 19044.1826.
Wifi setting will not turn on