Dell Latitude E6520 not detecting wifi networks

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. 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 Drivers for Latitude E6520. I tried to disable and enable the devices from the Device Manager. I also tried to update the drivers as well. 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.

[IMG=http://www.image-share.com/upload/2446/220m.jpg]
[IMG=http://www.image-share.com/upload/2446/221m.jpg]

 

Go to your network settings and manage wireless networks.

Remove the network you are trying to connect to.

Reboot.

Try to re-connect.

Report back with how it went.


Also make sure your wifi switch on the side of the machine is in the "ON" position.

 

This is the main cause of wi-fi problems on notebooks with a hardware switch. I'd be willing to bet over half the people in this forum made that mistake once. Checking everything but the wi-fi switch.

 

Yup, I have seen this happen quite often to people.