I have a DFI nForce4 Ultra motherboard with onboard Realtek'97 sound, which for the last 5 years has worked great. Then I tripped on my sound cord and ripped it *literally* in half, with the sound jack still in the audio out slot in the back of the computer.
This may or may not be unrelated...
I then noticed [this was after a move upon resetting up my machine and reinstalling Windows] that I have no right channel audio output. Two stereo systems and two cords, same result-- so it's definitely the computer.
So I buckled and got a Creative Audigy PCI card to get sound... SAME PROBLEM?!
I disabled the on-board audio in the BIOS, so how the heck does my motherboard jack up the right channel in both PCI and on-board sound? I knew motherboards hand their fingers in everybody's pie, but this is outrageously irritating. ;-)
Should be noted that the left channel sounds great, and everything [diagnostics, troubleshooting, device list] show that there is no problem.
Anybody seen or heard of this? I'm dreading having to scrap my motherboard, ugh.
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I've similar problems too. after formatting and reinstalling windows on my kt600-m, upgrading RAM from 256mb to 512mb, My on-board sound device stop working. Thinking that the device was no longer functional, I installed a pci sound card but unfortunately it doesn't work too. it seems like something was preventing the installation for the drivers both the on-board and PCI souncard.