Good day ! 

Thank you for writing to Dell Community Forum .

So that we can assist  you I would ask you to confirm if you have performed these steps ,

*Uninstall the current audio driver ,log into the system in safe mode with networking then install audio driver  click here for the link and update system BIOS (To update system BIOS ,go to dell support site and after choosing Bios as category then install the latest version .For example if  A19 was the last version then update it to A20 .Click here for the link )

*If the issue is still seen with a working speaker and head phones then its hardware failure in that case do forward the service tag of the system (sent via private message )so that I can check the details of the system to assist you .

Awaiting your response ,

Kindest Regards,

Good day !!

Might your reply is helpfull.  But there is still one problem, I can't update bios, mine is A8. When I open A20 Bios file. It ask for admin password. But the thing is that, I haven't put any password in system. It is fresh one. So can you explain me, How can I updated my bios. and another i am my sound drivers details ( location is showing  0 ).  

 I hope you will do your best. I hope you will help me. Waiting for your reply.

Hi Manoz.QA ,

Admin password is the windows password .If you haven't set any password then kindly login to the system as administrator. ( If you want to check if you have logged in as administrator then go to control panel and check under user accounts .Then click on manage user accounts where you can see if your name is listed as the administrator ) .

Now that your system is on A8 Bios version ,below you will find the file with the subsequent Bios versions .Kindly install them in the same sequence ,

*Click here for Bios version A09,

*Click here for Bios version A11,

*Click here for Bios version A12,

*Click here for Bios version A13,

*Click here for Bios version A14,

*Click here for Bios version A15,

*Click here for Bios version A16,

*Click here for Bios version A18,

*Click here for Bios version A19,

After installing these versions then install A20 version .

Do reply to this post after installation is complete .Awaiting your response .

Kindest Regards,

I have a similar issue with a machine here in our workplace.  Was this issue solved? and if so how?

Did all the basic troubleshooting as listed above.

- checked speakers, cables, ports

- test sound in the BIOS works fine

- updated BIOS to the A20

- reinstalled chipset and latest sound card drivers

- latest windows updates as of 7/16/15

- checked volume settings and configuration

-WIndows 7 sees when the speakers are plugged in or removed, but no noises or sound from anything.

Hi Winc707,

Thank you for writing to us! My name is Jennifer and I work for the Dell Social Media Team .

Here in this case you have mentioned that you have updated the BIOS , Chipset and audio drivers .

Was this issue seen after any changes that were made to the system ( software/hardware ) .

Just wanted to confirm on system startup are you able to hear the windows chime sound .

Also via private message send the service tag of the system ,operating system version ( 32 or 64 bit ) information .

Awaiting your response .

Kindest Regards ,

Everything is done.. but still the problem is same.. Now I am tired.. If you want to help me, then please give me your email id.. I will mail you with my service tag

Hi Manoz,

Do provide the service tag of the system ,with system owners contact details so that I can verify the details to assist you further .

Hoping to hear from you soon .

Kind Regards ,

Thanks for your help.  I was able to get it working.  I reimaged the computer, ran dell command, windows updates, and it started working again. Thanks for your assistance.

Hi Winc707,

I have exactly same symptoms as you. how did you solve this ?

What is dell command . I am trying to reimage but want to know what the dell command is .

Thanks in advance  

Its Dell an application to check/upgrade BIOS and drivers.

www.dell.com/.../EN

Thank for the link  Winc707,

Now I have no video at all even post...