My Dell Inspiron 3542 is not connecting with my wireless WiFi and not even showing any WiFi but with Ethernet cable is connect

Solution
If you are not seeing any WiFi signals, make sure the wireless is enabled in the BIOS and not turned off with any hotkey or physical switch on the laptop. Does the WiFi card show up in Device Manager with no issues? If it all looks OK, the antenna connections to the card may be out.
If you are not seeing any WiFi signals, make sure the wireless is enabled in the BIOS and not turned off with any hotkey or physical switch on the laptop. Does the WiFi card show up in Device Manager with no issues? If it all looks OK, the antenna connections to the card may be out.
 
Solution