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Microsoft Kernel System Audio Device/Unknown Device

Posted on 2013-06-10
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Last Modified: 2013-06-18
Hi all, I'm trying to help a friend with Win XP/SP3 desktop. Had a power outage last week, and since then, no sound. Device Manager had Microsoft Kernel System Audio Device in yellow, but could not update drivers or install drivers for it. I uninstalled it from the Device Manager list, and rebooted computer.
Now there is a listing of Other Devices./Unknown Device. The only information I can get about it is the Device Instant ID which is SW\{B7EAFDC0-A680-11D0-96D8-00AA0051E51D}\{9B365890-165F-11D0-A195-0020AFD156E4}
I installed Belarc Advisor to find out what this system is. If that info would be helpful, please let me know.
I can't find a reliable source to download the MS Kernel System Audio Device driver--I've tried several. I don't know what to do to get the sound back and get rid of that yellow list of Unknown Device.
Thanks for your help.
EJH
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Question by:ejhcolorado
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Expert Comment

by:Seaton007
ID: 39235376
The power outage may have damaged the sound card.  In that case you would need to get a new sound card.
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Author Comment

by:ejhcolorado
ID: 39235429
Seaton007,
I thought of that as a possibility. If the speakers work on another computer, would that pretty much point to the sound card? Are there other tests I can do to troubleshoot?
EJH
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Expert Comment

by:JohnnyCanuck
ID: 39235499
The hardware ID would be more helpful, or even more helpful would be the motherboard make/model.  To find the hardware ID go to control panel>system>device manager.  Right click the sound device with the yellow flag and select properties.  Click on the details tab and copy the information here.  To find your motherboard make/model, open up the case and examine the motherboard - it should be written somewhere on the board, usually in large white letters.
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Author Comment

by:ejhcolorado
ID: 39236056
Hi Johnny,
There is no hardware ID. The only information from the Details tab in
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Author Comment

by:ejhcolorado
ID: 39236078
Johnny,
Sorry about the incomplete response above. I posted the only information in the Details tab above in my original post. There are a whole lot of other numbers in the pull-down menu choices, for example Harware ID is SW\{b7eafdc0-a680-11d0-96d8-00aa0051e51d}.

As far as the motherboard, I am not at the computer in question and cannot open it up. I am connected to that computer via Logmein, though, and have Belarc running. The Belarc report shows the Main Circuit Board info as:
Board: Intel Corporation DG31PR AAD97573-301
Serial Number: BTPR82900PKQ
Bus Clock: 1333 megahertz
BIOS: Intel Corp. PRG3110H.86A.0052.2008.0612.1910 06/12/2008

Is that helpful? or is it something else you need?
EJH
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Expert Comment

by:JohnnyCanuck
ID: 39236203
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Author Comment

by:ejhcolorado
ID: 39236245
Johnny,
That didn't do it. I downloaded and installed, and the tab on the Sounds applet in the Control Panel still shows no playback audio device at all. I still have the yellow exclamation point next to Other Devices./Unknown Device in Device Manager.
If I am to get a sound card, what do I ask for at the store? Probably going to Best Buy, since it's the closest. I just don't know what to get.
And what if the sound card is part of the mobo? How do I figure out if it is?
Thanks,
EJH
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Expert Comment

by:JohnnyCanuck
ID: 39236584
Did you try removing the device after you installed the driver and rebooting and letting windows go through the "found new hardware" routine?  If you do this, let windows do automatic search.
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Expert Comment

by:JohnnyCanuck
ID: 39236586
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Author Comment

by:ejhcolorado
ID: 39236630
Johnny,
No, I didn't do that. I'll have to wait until tomorrow (6/11) to try those two steps and get back to you...
Thanks for staying with me on this.
EJH
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Accepted Solution

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ejhcolorado earned 0 total points
ID: 39239462
Hi Johnny,
I tried both of your suggestions, and they didn't work, unfortunately.
However, I did solve the problem myself.
I was able to find a restore point on my friend's computer before the date of the power outage. It restored successfully, and sound now works on the computer.
Thanks for your help anyway.
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Expert Comment

by:JohnnyCanuck
ID: 39239737
Great.
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Author Closing Comment

by:ejhcolorado
ID: 39255592
It was the only thing that worked. I tried all of the other suggestions, but that did not solve the problem.
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