I have suddenly noticed that only one of my two stereo speakers is working. I have Windows Vista Ultimate 64 bit, service pack 2 and the Realtek HD audio IS enabled in my MSI MS7309 motherboard BIOS and have the latest driver, so I can't figure out why, in AUX mode of my stereo that's hooked up to my onboard sound (in the green analog port-always was), that both speakers work when the FM radio mode is on. I even today tried a third-party Vista driver and that didn't solve the problem. Any suggestions from you good people? Thank you, in advance.
Had you not installed another driver, you could have tried rolling back the driver, but too late for that now. Do you have a Windows restore point to use when you know both were working ?