Check your Device Manager > Sound category
What does it say?
What version of Windows are you using?
Device Manager lists two possibilities: 1) ATI Function Driver for High Definition Audio - ATI-AA01, Mfr. -ATI, driver date: 4/20/09, version: 5.0.60000.49
and also; VIA High Def Audio, Mfr. - Via Technologies, driver date 7/25/08, version: 6.01.1510
I have a brand new Visionman WGMI-2G3110 with VISTA Home Premium 64bit.
In case it is related, my graphics card is an ATI Radeon HD 4670.
I've used PC Pitstop in the past to evaluate my other computers, so I thought I'd run it on the new Visionman. I wasn't surprised that it suggested that I needed to update the ATI Function Driver for High Definition Audio - ATI-AA01 or the VIA High Def audio drivers. I have a 5.1 Logitech speaker system attached to my computer. It produced great sound on my previous HP Pavilion. Oddly enough, the audio doesn't sound as good on the Visionman. I figured that I either had not configured the audio properly or that it was the sound card or the drivers. I get audio. It just isn't coming out of all of the speakers, even though I set the config for 5.1 speakers.
Anyhow, I thought it would be easy enough to just find and install the driver updates, however, I couldn't locate them doing browser searches. What I keep finding are all these sites that have programs that claim to locate and update your drivers, which of course comes with a cost.
I bought my computer from ECOST.com, rather than directly from Visionman. ECOST has been of no help whatsoever. There doesn't seem to be anyone "at home" at the Visionman web site either.
According to PC Pitstop, there are newer drivers for the ATI Function Driver for High Definition Audio - ATI-AA01 dated: 7/23/2009, version: 5.0.60000.52, but where can I find this upgrade? There's probably a newer driver for the VIA High Def Audio too, but I couldn't locate anything for this either.
Try the newest ATI Catalyst suit is 10.3 (10.4 soon to be released.)
If you're using the HDMI connector for your TV and the HDMI shows as Disconnected, the easiest way to get the sound back is to do this.
When you right Click on the ATI icon in the System Tray and the Context Menu comes up, you'll notice :
- 1. ATI Radeon HD 4800 Series
- 2. ATI Radeon HD 4800 Series
Say your TV is connected to "2. ATI Radeon HD 4800 Series"
You would Right click on the ATI icon > Select "2. ATI Radeon HD 4800 Series" > Disable Display
Next, Right click on the ATI icon > Select "2. ATI Radeon HD 4800 Series" > Enable Display
You'll find that under Playback Devices, ATI DP OPutput (HDMI) will show as enabled.
The easiest way to prevent it from becoming disabled is to have your TV turned on and set to the HDMI channel that your computer system is on when you turn your system on and when you turn your system off. Otherwise Windows sometimes changes it to disconnected.