WiFi connection is lost on Dell Inspiron 5447 laptop.

[mitra.zare]

My WiFi sign just disappeared i can not find any WiFi sign or name on network adaption neither.
I run the diagnose on the hardware to see if its something wrong with WiFi card but every thing was OK.
it just work with Ethernet and just when i connect the cable directly from modem to laptop,i try it somewhere else too i just had Ethernet option .no WiFi or wireless.my laptop doesn't have any key for WiFi ( as i aware) and I've read every post related but couldn't find whats wrong with it yet.can you help me please

 

[webworkings]

Sounds like the WiFi card just went. It does happen. You can look into either replacing the internal card or getting an external one that connects via USB.