rohit3192,
Try holding the reset button down for 15-20 seconds continually. Otherwise, the battery will have to wear down and you'll be able to connect back to the computer for charging.
--HDTech
I own Samsung yp-r0 which is updated to latest fw 1.22 the upgrade was successful and player worked fine for few weeks but yesterday I put some .mp3 files in it and after disconnecting from Pc it showed "updating library".That happened for a long time ,say,15 minutes. Even reset button was/is not of any use.The player was in MSC mode.
Is there a way to bring it back to life? It is not possible for me to send the product to service center(warranty is not available in my country).

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic