you will not believeeeeeeeee it !!!
I opened up the cabinet ,and saw that the pin was in place, for accuracy i again reinserted at both ends, as shown in the mobo manual . Then i thought what could be the problem . I went to bios->chipset -> south bridge config and saw that it was listing front panel as HD AUDIO which is my default audio device . Seeing no option ,i changed it to AC97 to see what happen and rebooted.
Now in realtek HD manger ,my rear pins were faded out while front pin were highlited ,when i joined my headphone to the front pin VOILA! it worked ,same thing happened with speaker also .However my attached microphone or mic was not working.
Also if at that time i tried to use the rear panel there was no response .
I rebooted again and loaded setup defaults ( ie front panel set to HD AUDIO ) as i wanted to use mic for some purpose ,to my horror when windows booted both rear and front panel had faded in the manager and no response was showing for any device at both panel (ie for mic,headphone or speaker ).
Terrified , i again changed the front panel config to ac97 ( through BIOS ) ,and booted and this time again front panel was working and not only speaker & headphone ,even the MIC was working ,but the rear panel was fully dead.
Well ,it is a blessing in disguise as i now do not have to rotate the cabinet whenever i had to set up the speaker or headphone or mic ,however i have a few queries
DID my rear panel audio slot got damaged due to my misadventure ?
Will there be any difference in quality now that i am using front connector set to AC97 ,as in windows still the realtek HD audio manager is working and controlling audio ?