Buttons are working fine, because when i switch on the ipod and plugged it in the charger, it shows first as green and then moving to orange (after 3 to 4 blinks) its goes off
And also i tried resetting the ipod as well (as per suggested for 2nd generation)
Today, i gave a try from my another machine \
* i switched off the ipod
* i plugged into the charger
* it blinks for 3 to 4 times and then goes off. with this plugging itself, i switched on the ipod
* i plugged out the cable from the machine and plugged it back immediately
* This time it is getting charged
* i allowed it to charge for 2 hours and plugged out and now i could see playing songs successfully
But the problem the same thing is not working in my personal laptop, it is with WIn 7 (whereas the machine which is working with is WIn XP)
Even i tried to see whether it is detecting in Itunes of my personal laptop, it is not getting detected and not getting charged also. So i uninstalled the itunes and tried again, but it still it is not getting detected in Personal laptop and not charging also.