Hi Dispee,

Here’s what you can try.

Update BIOS:

Note: Before updating BIOS please ensure that:
*Battery is 10%> or >10% charged
*Battery charger should be connected
*No external devices (flash drives, printers, external hard drives) should be connected.
*All other programs should be closed and documents saved

1. Click on the link http://dell.to/SbV0ks
2. Click on ‘Download File’
3. Save the file on desktop
4. Right click and choose ‘Run as Administrator’
5. Follow the on-screen instructions to install the program
6. Restart the computer

Then uninstall the Wi-Fi drivers:

1. Click on Start
2. Right click on Computer -> click on Properties
3. Click on Device Manager
4. Expand ‘Network Adaptor’
5. Choose the Wi-Fi card installed on your computer (make a note of the Wi-Fi card name and later download by following the next step)
6. Right click -> choose ‘Uninstall’
7. Restart the computer

Now go to our support site and install the drivers:

1. Click on the link http://dell.to/R2EYbS
2. Type the Service Tag of the computer
3. Choose the operating system
4. Click on ‘Network’
5. Check the Wi-Fi card name that is installed on the computer
6. Click on ‘Download File’
7. Click on ‘Download Now’
8. Click on ‘Save’
9. Choose the location as desktop, save the file on the desktop
10. Double click on the file; choose ‘Continue’
11. Click 'OK' on Select the folder where you want to unzip the files to( Make a note of the folder location)
12. Click ‘Yes’
13. Click ‘Ok’, follow the on screen instruction and install the file
14. Restart the computer

In case you do not get prompts on the screen for instructions, then

1. Browse to the folder where the files were unzipped to and locate the setup file
2. Double click on the file; follow the onscreen instructions to complete the installation.

Next, update the Video drivers:

1. Click on the links http://dell.to/SbXVK1
2. Click on ‘Download File’
3. Click on ‘Download Now’
4. Click on ‘Save’
5. Choose the location as desktop, save the file on the desktop
6. Double click on the file; choose ‘Continue’
7. Click 'OK' on Select the folder where you want to unzip the files( Make a note of the folder location)
8. Click ‘Yes’
9. Click ‘Ok’, follow the on screen instructions and install the file
10. Restart the computer

In case you do not get prompts on the screen for instructions, then

1. Browse to the folder where the files were unzipped and locate the setup file
2. Double click on the file; follow the onscreen instructions to complete the installation

Please reply if you have any questions.

I did everything what You said, but still wifi not working.

I found something like this, but don't see any possible way how to connect to wireless network.

Hi Dispee,

Thank you for your quick response. I am sending you a private message. Please respond with the system Service Tag and your name. I will check the system specifications and try to provide with direct link for the drivers.

Please reply if you have any questions.

With my service tag i can find only 2 network drivers. One for lan, another for wifi/bluetooth which doesn't work.

Hi Dispee,

Thank you for your response. I appreciate your effort. I would request you provide the service tag of your computer on the private message so that I can send you direct link. 
I would be more than glad to assist you.

Please reply if you have any further questions.

It works. Thanks !

Hi!

Thank You!

It's really works!!

Hello

I have the same problem but the solution doesn't work in my case.

Can you please help me?

Thanks

Can anyone helpme?