PLZ HELP ME!!!!!

Hey ppl the player is being recognized by my computer all of sudden inspite of taking all the precautions and it is not switch on it self!!! i dunno wht to do plz help i have tried my level best to switch it on but its not happenin help me!!!

I updated the firmware last night and am having the same problem now.

Have you tried resetting the device by pressing the [Select] and [Volume Up (+)] buttons at the same time?