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Windows 7: Only one channel on initial boot

19 May 2011   #1

Windows 7 Ultimate 64 bit
Only one channel on initial boot

I have an asus m4a785td-evo motherboard. I am using onboard video and audio. I am sending a two channel stereo signal from the computer via the 1/8 inch plug splitting to a dual rca connection to my receiver. My problem is when I initially boot, I only get sound out of one channel. Then if I reboot, or sometimes it starts itself after a few minutes, the audio is perfect and it stays that way for as long as I want to play music. I have installed the most current audio drivers and even went back to the previous edition driver and tried that. I have two zones of speakers and both work fine. The receiver has no problems. It seems like it might be a driver issue, but I have tried all the drivers I could find. There are no warnings in the device manager and my settings for stereo playback are correct. I have an old Creative Audigy sound card I can install and bypass the onboard sound, but I hesitate to do that because it is a hassle and I hear Creative comes with loads of bloatware that is difficult to get out of your registry. Can anyone help? I also discovered recently that double booting does not always result in both channels working, but eventually the second channel comes on, usually about 10 minutes after booting, although that varies.

My System SpecsSystem Spec


 Only one channel on initial boot

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