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ASUS M2N-SLI with ATI HD 5450; Win 7 intermittently mutes sound

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November 22, 2011 2:35:07 PM

I have a problem with Win 7 sound.

My home built HTPC is based on Asus M2n-SLI mobo and ATI Radeon HD 5450 video card with HDMI out to Onkyo 7.1 receiver which passes video and audio via HDMI to Olevia 36 inch LCD TV. PC (ATI card)-- HDMI out --> stereo receiver -- HDMI out --> TV

The HTPC is never turned off. When I turn on the receiver and TV components to watch TV, Win 7 (Home Premium, 64 bit) will mute the system. I cannot just unmute.
I have to go into Control Panel > Sound. There I find only one option (expected): AMD HDMI output.

When I right click and choose Test option, it works just fine. I make no changes to the configuration and the sound/speaker icon in the system tray is normal. Then I open Media Center and everything works fine. When I'm done watching TV, I turn off the receiver and TV. When I start another session, the problem is back.

I did not have this problem with an older receiver but using completely different component connections. PC -- HDMI out --> TV -- audio out --> old stereo receiver.

Any help would be greatly appreciated! THANKS!
a c 207 Ĉ ASUS
a c 717 V Motherboard
November 22, 2011 3:12:58 PM

Welcome to Tom's Forums! :) 

This 'seems' more like an AMD driver issue which often is a 'version' specific issue. Therefore, either try a newer <or> older version to that's already installed.
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November 22, 2011 3:16:15 PM

jaquith said:
Welcome to Tom's Forums! :) 

This 'seems' more like an AMD driver issue which often is a 'version' specific issue. Therefore, either try a newer <or> older version to that's already installed.


I updated the driver just last night. I'll try finding an older version. Thanks for the quick reply! I'll post my progress and hopefully, the solution.
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