You tried holding down the power button for over 30 seconds then tried to restart it?
One last thing i thought of is to leave it on until the battery is exhausted, and it turns off on its own. Then you could try again to connect it to the pc while holding down the center button. If it connects, then format the player using your pc. give it a long charge, then disconnect it, and format the player again using the players menu. If it didn’t connect, then give it a long charge with a cell phone charger, then try to connnect it to the pc while holding the center button. If it still doesn’t connect, then hold down the power button for at least 30 seconds, then try to start it up. If it starts up, then format the player using the player’s menu.
I can’t think of anything else to try, and if all those things don’t work, your player probably has a hardware problem.
