The WiFi and bluetooth on my laptop are not working. It is just like Airplane mode without turning it on. I am able to connect to the internet only by connecting an ethernet cord. I tried network adapter troubleshooting and even then it only says "ethernet cable not connected".(usually it asks to choose which network option I need to troubleshoot with but now it skips it and only troubleshoots ethernet.
Make sure you haven't mistakenly turnoff your WiFi Card on laptops you press on your key board Fn (Function Key) + F3 to either disable or enable the wifi card.
Try that if it doesn't work
It might be the drivers of your WIFI card
You can read this article about <a href="http://accatech.com/wifi-disconnects-frequently-dell-laptop" rel="nofollow" target="_blank">wireless network disconnected</a>