put new pc together has on board realtek sound which should be default as its enabled in BIOS.
only other sound source is on a hd4350 ati sapphire graphics card this should only kick the sound in if i use hdmi but as yet i have no hdmi monitor or lead.
i cannot get the realtek to be default sound the computer is showing the hdmi as default sound source. reloaded latest driver for realtek also tried original supplied cd each time drivers install but will not take charge as default. device manager shows all ok.
lost any offers of help please, using headphones tried two different sets, tried playback on youtube over the net and mediaplayer using files from hdd & cd's.
No could only find the onboard sound to enable, after trying realtek drivers from the cd, msi board maker site, tried realtek which advised you go to board makers site. the direct driver from realtek changed the name to realtek on all icons but still no sound. default and configure options in playback properties still greyed out. not keen to do a complete reinstall of windows having just got it how i liked it prior to testing sound.
realtek hd audio software in control panel of no use.
I was under the impression that the hd4350 could only playback sound via headphones/speakers connected to a hdmi monitor with a hdmi lead and would not be capable of producing any response from the pc case.
i do not have a hdmi monitor or lead at present. managed to get all the icons back to realtek on the pc but no sound and using the test button in properties reports fail.
there is now a realtek update it vista updates which fails to install.
In Device Manager expand the 'Sound, video and game controller' section and then right click on the 'ATI Function...' and you should have the option to Disable it (as well as update driver & uninstall).
My own graphics card also has HDMI functionality but doesn't cause the problem you're experiencing so I'm puzzled why yours doesn't work properly. I am using XP if that makes a difference.
tried as you mentioned and disabled, restarted still no joy, I have been told that in vista with realtek you need to change a setting from speakers to headphones but searched and searched and have not a clue how to find it.And no one could remember it.