Dell XPS 1710 Docking Station Speakers Have No Sound

This is a new problem. My Dell XPS 1710 laptop sound (with Windows Vista Home) works fine except for when it is in the docking station. The sound continues to output to the laptop internal speakers. I know the external speakers work because I can plug them directly into the laptop and they work fine. I have tried uninstalling the drivers and reinstalling them both with the laptop docked and undocked, but I cannot get the speakers to work from the docking station. I have rebooted numerous times to no avail. In Control Panel under Sound it says "3-High Definition Audio Device, Microsoft". In Device Manager it says "High Definition Audio Device". What is the problem? Is it hardware or software? Is there a way of removing the hardware profile for the docking station in Vista?
creg021099Asked:
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creg021099Author Commented:
I found the solution; it was Windows Defender. Whenever I installed the Sigmatel 9200 software, which is supposed to be installed on my PC, it would freeze up the volume control at 100%. It would also make the Audio Service to stop working. Then I would get a message mentioning ""Host process for windows services stopped working and was closed". Once I turned off Windows Defender, the error messages went away and my docking station speakers started working again.....amazing! I got the solution from this website: http://www.online-tech-tips.com/computer-tips/host-process-for-windows-services-stopped-working/
No, I do not have Dell Support to thank for helping me. On the first call to them, I was told to undock my laptop, I asked if that would disconnect our chat session and the rep said "no".....wrong! I got disconnected and the rep never attempted to call me back or email me. The 2nd time I contacted Dell support, they asked if this was a Dell docking station and I said "yes" however, they wanted to charge me anyhow because they claimed my FOUR year warranty does not cover third party hardware, ie, my docking station that I PURCHASED FROM DELL! Sheez! I fixed it myself and saved at least $69 dollars.
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NikSystems SpecialistCommented:
I have the same issue and I'm using IBM R52 laptop. Once it is docked, I just have to plug the speakers into the docking station instead of laptop itself.
Do you have audio/mic connector on your docking station?
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creg021099Author Commented:
No, the docking station has a headphone jack, but it has worked fine until recently.
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NikSystems SpecialistCommented:
It could be a hardware or software related problem. Can you try to contact service center if you can try it on another docking station.

Before that, if you have drivers for your audio device, uninstall it from Control Panel and restart. Once you reinstall drivers see if that helped.

If you want to be positive you can reinstall OS and see if that will fix the problem. That way you would be sure it's hardware related. At least I would do that..
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