Did you connect the antennas on the back plate?
Most MOBOs that come with WiFi/BT use a single device for both and they require an antenna to work as designed.
Sometimes you can get a signal if you are right on top of it with your wireless/BT device but don't expect stellar performance and do expect frequent drop outs and issues like not working through a metal enclosure like all other RF signals.
“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein