I am Vinod. I will try my best to help you resolve this issue.
Let's try a reset. Toggle the hold button at the top back and forth 3-4 times and place it in a position so that you do not see the orange/red color. i.e. the hold button should be on top of the orange/red color
Then press and hold the menu and the center button together until you see an apple logo
The apple has just popped up.
let's wait until you are taken to the home screen
Now what can I do to prevent this in the future?
Is it working fine now?
So far, its synchronizing at the moment.
What do you think caused it to do that?
May be the ipod was frozen. This may happen sometimes when some minor software issues occur. But nothing to worry
Ok, it seems to be working fine now, thank you.
Only if it happens often, we need to repair the ipod
Good to know that...:)