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No audio, no windows sound

Hello folks,just recently experienced a no audio problem on my computer. Originally had a c-media card installed with everything working ok , then suddenly no sounds at all. Removed card and installed spare Sound Blaster Audigy and downloaded latest drivers. Everything installed ok. No conflicts in Device Manager, proper card identified in control panel/sounds. Windows sound on reboot , but after reboot nothing again. After countless removal of sound card in Device Manager and re-installing drivers , no change. Removed card and re-verted back to on board audio. Realtek high definition audio with latest and original cd AC-97 drivers. Now no audio device available in Control panel/sounds. Within the Realtek HD Audio Control panel I can test speakers and hear sound ok.
System Information
Time of this report: 7/9/2008, 20:09:14
Machine name: DESKTOP
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp.080413-2111)
Language: English (Regional Setting: English)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: BIOS Date: 03/21/07 15:03:35 Ver: 08.00.12
Processor: Intel(R) Core(TM)2 CPU 4300 @ 1.80GHz (2 CPUs)
Memory: 1024MB RAM
Page File: 591MB used, 1871MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.5512 32bit Unicode

DxDiag Notes
DirectX Files Tab: No problems found.
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Music Tab: No problems found.
Input Tab: No problems found.
Network Tab: No problems found.

When I test direct sound I get an error at step 3 ( Direct Sound Create)HR Result=0x88780078(no driver)

Sorry for the long post, but I wanted you to get as much info as possible to help me solve this very confusing, very frustrating problem. Any help would be appreciated.

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Re: No audio, no windows sound

In reply to: No audio, no windows sound

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My guess.

In reply to: No audio, no windows sound

Look into that new MS UAA sound driver.

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No audio, no windows sound

In reply to: My guess.

Thanks for the help guys. I looked into both of your suggestions , but didn't find any success. After uninstalling/installing Realtek HD Audio and letting windows search for the drivers, I noticed the driver # was......5296. I had downloaded a newer version of driver for Realtek , but windows kept installing the old driver. I manually located the new driver and now I have sound. Not 100% percent success, my rear speakers have a very low volume, but it will do for now. Thanks again.

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