Windows 7 x64 - No sound output

[bug2k10]

I've just done a clean install of windows 7 x64 onto a new hd, all drivers are installed including the sound driver but I get no sound output to the speakers.

The soundscard is an onboard Realtek ALC662 HD Audio codec, I've tried the Microsoft driver as well as downloaded the latest Realtek and Gigabyte Azalia drivers. They all install fine but produce no output.
I have also tried installing an old Creative Audigy2 PCI card, this also installs fine but produces no output.

I had previously had Windows XP installed on this hardware and sound worked fine. I have also plugged the speakers into an adjacent system and they work fine. Plugging my old HD back in and booting XP the sound works fine.

It looks like a Windows7 issue, anyone have any ideas on what to try next?

 

[not so gray matter]

Some realtek sound drivers are known to be unreliable. You may have to try mutiple different sets of drivers until you find one that works for you. One of the best ways to do this is to go to your OEM website and download their drivers. If you built the computer yourself, just go to the Realtek website.

 

[bug2k10]

I have already tried the latest drivers from the Gigabyte site and the Realtek site and all appear to work fine, there is just no sound form the speakers.

It seems unusual that installing a pci soundcard (after disabling the o/b sound) also installs fine, but there is no sound from the speakers either.

 

[Lomai]

Hi

Go to system tray>right-click on volume icon>open playback devices
Post a picture of what is displayed

 

[bug2k10]