I run a set of RCA/phonos from the green socket in the mainboard to my hi fi. All was fine until I unplugged the monitor and plugged it back in. It is and has always been DVI.
Now Windows 7 thinks it has a HDMI connection and wants to send sound to the "TV". Worse, it doesn't detect that I have plugged in speakers - or headphones in the front.
In 'Sound' on Playback tab, I have:
Speakers High Definition Audio Device Not plugged in Digital Audio (HDMI) High Definition Audio Device Default Device [with a tick and level meter]
I rolled back with System Restore but its just the same!
Edit 1 - Microphone not detected; wondering if the sound chip has gone pop!?
Edit 2 - With VGA it doesn't work either. I think its defaulting to the video card's sound device (HDMI) because its not detecting any speakers, and I wonder simply if something is faulty, that it blew when I messed around with the hi-fi and phonos.