For me, I turned airplane mode on while using the laptop at work (we have no wifi - so I figured why not). When I turned airplane mode back off, the wifi switch wont turn back on. If I click it, it flicks on then back off. In Device Manager, Windows detects no problems with the device, and says it's working properly.

1. Dell Inspiron N5010 Wireless Switch Not Working
2. Dell Latitude E6420 Wifi Switch Not Working

I've recently got Dell Latitude E6520 laptop and everything (including wifi) was working fine till today. Today first I was able to see wifi networks (and my wifi in particular), but when I tried to connect to any of them I got message 'it wasn't possible to connect to wifi network'. I tried multiple times. Restarted connection and restarted computer, but it didn't help. I've managed to connect using my older laptop with no problems at all.

Dell Inspiron N5010 Wireless Switch Not Working

I've also checked my BIOS settings to be correct on Wifi. I've also downloaded drivers (DELL,CRD,WRLES,HMCRD,DW1530,HF,A02,A02) from the website. I tried to disable and enable the devices from the Device Manager. I also tried to update the drivers as well.

Dell Latitude E6420 Wifi Switch Not Working

Nothing works and no networks detected. Please let me know what to do (note that I can't connect to wifi at the moment with my laptop) so I need to use my older laptop to e.g. Get the drivers. Attached are the photos. If any more info is required please let me know.