Windows 7 x64

Latitude E6420

After loading Windows 7 on the E6420 and installing the audio driver from support.dell.com the audio devices show up in device manager as enabled, (IDT High Difinitin Audio CODEC and Intel Display Audio), they show up in the Playback tab of the Sound property in the control panel.  Where the issue is in the systray, the audio shows up with the red X and states the "Audio device is disabled".  After running the Windows 7 troubleshooter it attempts to enable the devices (though it shows up in Device Manager as enabled) but it states it fails to enable the device.  After some more troubleshooting I also get the error, "No speakers or headphones are plugged in"

Troubleshooting steps taken:

  • Installed latest drivers from support.dell.com
  • uninstalled audio driver and reinstalled (R297613)
  • uninstalled driver and let windows install a driver (got the same issue)

See the Windows 7 troubleshooter information below. 

Thanks!

 

Playing Audio
Publisher details
Issues found
Not fixed
Not Fixed
Enable the audio device
Completed
Potential issues that were checked
Issue not present
Issue not present
Issues found
Detection details
6
Audio device is disabled
Not fixed
Not Fixed
The audio device you selected is currently turned off in Windows.
Potential issues that were checked
Detection details
Check audio device
Issue not present
There might be a problem with your audio device.
One or more audio service isn't running
Issue not present
Both the Windows Audio and the Windows Audio End Point Builder services must be running for audio to work correctly. Atleast one of these services isn't running.
Detection details
Expand
Informational
Audio endpoint
Type of audio device being diagnosed.
Endpoint: Speakers
Headphones
Headset Earphone
Informational
Installed audio devices
This file contains the details stored in the registry for all installed audio devices.
File Name: Registry log.reg
Collection information
Computer Name: D9WY56Q1
Windows Version:
6.1
Architecture:
amd64
Time:
Friday, August 05, 2011 5:06:54 PM
Publisher details
Expand
Sound
Troubleshoot problems that prevent your computer from playing or recording sound.
Package Version:
1.0
Publisher:
Microsoft Windows
Playing Audio
Play sounds and other audio such as music files.
Package Version:
1.0
Publisher:
Microsoft Corporation
Hardware and Devices
Use hardware and access devices connected to your computer.
Package Version:
1.1
Publisher:
Microsoft Windows