suddenly no sound!

Foxconn 946gz7ma
May 14, 2010 at 15:45:13
Specs: Windows XP SP3, N/R
I have an integrated Azalia AC 97 audio on this motherboard which I have been using for a long time without any problems. It suddenly stopped working this morning - I have no sound. This is without any changes in software or hardware!

I noticed that in control panel>sound and audio devices properties>volume tab "no audio device" was displayed and volume controls were not accessible.

In the device manager everything looked fine - "device is enabled" etc.

I followed the windows troubleshooting guide with no success. I also checked my bios and the integrated audio menu is set to "auto".
I finally reinstalled the driver using the original drivers CD. Now I have Realtek HD audio displayed as my sound device but still no sound!

Can anyone please help?

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May 14, 2010 at 23:43:39
Positron, several things come to mind. First to my paranoid brain, is a nasty. You might've been infected by a worm/trojan which targets your sound card. Be aware that a virus and a Trojan are similar, but not the same. Many times, an AV detects one it can't clean, other times, it gets missed entirely.
If you need to clean one, Superantispyware (info only. I’m not paid for recommendation) can do the job and you can get it free @:
among other places. They have a Vista compatible version if needed. Dunno about Windows 7 or later.
If it turns out that you need to use it, be sure to update Superantispyware prior to running and disable 'restore' (restart after cleaning) so the nasty doesn't get put back. They just released a new update recently and it changes all the time. Things are in a constant state of flux.
The restore thing is critical. May not be your deal at all, but won't hurt anything to try.
Next is to take a look at card properties in the control panel and be sure nothing's muted.
There're others, but start there.
Ed in Texas.

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May 17, 2010 at 04:28:52
Many thanks for your recommendations Ed.

But the problem was not malware- scanned my pc with both Adaware and Malwarebytes, nothing was detected.

Finally out of desperation I started fiddling around with the audio sockets on the back of the case which got me nowhere. But after I left the pc, my Mrs played something in youtube and suddenly we had audio again.

I still don't know what the problem was!?

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May 18, 2010 at 02:02:18
Positron, SWAG, possible it's software related? Different programs use different things to play sounds. Maybe you 'opened' the sound(s) with a different critter?
Ed in Texas.

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