cheers Going to start my windows re-install process have all drivers downloaded to my external and unrar'd ready for instal Thanks again Much appreciated
if they are usb headphones, windows recognize automatically. if they are 3.5 mm pin headphones, you must check settings of default device in audio settings and also check the volume level of headphones in driver.
Actually before this problem occurred whenever I use to plugin my Headphones the speakers would stop playing sound and all would would play in my headphones. But after this problem of sound, even after I plugin my headphones to the system the sound still plays on systems speakers only!
choose options in realtek sound manager to mute speakers when you plugin earphones. choose "ac 97 front panel" in settings instead of "hd audio front panel". some mother boards have this setting in bios itself. play with those options till you get desired functionality and keep removing and plug back the headphone pin when you change those options to make it work.
latest hda good version already posted in the thread, search it. version 6.0.9071. 6.0.9088 was not so good.