Hi

Rachel,

Please Follow the instructions mentioned below.

Log in to an administrator account in Windows XP/Vista and click "Start" in the bottom left corner of the screen.

If you use Windows Vista: Click "Control Panel" and select "Hardware and   Sound."

If you use Windows XP: Click "Control Panel" and select "Performance and Maintenance."

If you use Windows Vista: Click "View hardware and devices" under "Device Manager."

If you use Windows XP: Click "System" to open "System properties" window.Click the button "Device Manager."

Click on "+" next to "Sound, Video and Game Controllers" to expand this entry.

Right-click on a sub-entry that contains a word "Audio." For instance, "Realtek High Definition Audio."

Select "Uninstall" and click "OK" to confirm. Finally, click "Restart now" to reboot your computer

Please log into www.dell.com/.../04

And download the Realtek audio,under the AUDIO drop down, based on your operating system and  install it.

If this does not work please update the Bios to the latest version, you will find it in the same link mentioned above,under the BIOS drop down

Regards,

Thomas Anthony

(DELL-Anthony T)

Social Media and Communities Professional

Hi Rachel.lindhart,

Welcome to Dell Community

As per the information provided by you, it seems accidently the sound drivers might have been deleted.

Kindly try a System Restore to the date and time when the sound was working fine, as per the steps listed in the link below (You may change the Windows Operating System as per one installed on your computer):

http://dell.to/LvSqE7

In case still there is no sound, we might need to install the compatible Audio drivers as per the Windows Operating system installed from the factory on the computer.

Kindly reply with the findings. Glad to help