I've already posted this issue on a game forum I play, so I will simply copy my posts here:
"Alright, I JUST installed a brand new OCZ 600W PSU, 2 more gigs of ram, and a SAPHIRE 3870 card about 20 minutes ago. I turn on the computer, and my sound is gone! I go to the control panel, (I have vista) and under the sound menu, it detects no devices. i go to my device manager and under the Sound Video and Game Controllers list, there is a "High Definition Audio Device" installed, up to date, and enabled. Under System Devices, there is a High Definition Audio Controller" installed, up to date, and enabled. Still nothing on the sound menu though, and any time I try to play a file (.mp3) with windows media player to test the sound, I get a pop up saying there is no sound device. Any ideas?"
"Well, I removed the graphics card, and sound worked fine. The sound applet detected my speakers, and everything played fine. I put the graphics card back in, and wound up right where I started. No sound, no sound device detected. Any ideas?
Some possibly pertinent info: The monitor must be plugged directly into the graphics card, into what I believe is an HDMI port. I don't have an HDMI cable, so I am using an adapter that came with the card. I do not have speakers on my monitor but rather plug-in speakers."
Computer type: HP Pavilion a1710n
Sound card: Whatever this thing came with
"Alright, I JUST installed a brand new OCZ 600W PSU, 2 more gigs of ram, and a SAPHIRE 3870 card about 20 minutes ago. I turn on the computer, and my sound is gone! I go to the control panel, (I have vista) and under the sound menu, it detects no devices. i go to my device manager and under the Sound Video and Game Controllers list, there is a "High Definition Audio Device" installed, up to date, and enabled. Under System Devices, there is a High Definition Audio Controller" installed, up to date, and enabled. Still nothing on the sound menu though, and any time I try to play a file (.mp3) with windows media player to test the sound, I get a pop up saying there is no sound device. Any ideas?"
"Well, I removed the graphics card, and sound worked fine. The sound applet detected my speakers, and everything played fine. I put the graphics card back in, and wound up right where I started. No sound, no sound device detected. Any ideas?
Some possibly pertinent info: The monitor must be plugged directly into the graphics card, into what I believe is an HDMI port. I don't have an HDMI cable, so I am using an adapter that came with the card. I do not have speakers on my monitor but rather plug-in speakers."
Computer type: HP Pavilion a1710n
Sound card: Whatever this thing came with