MP3 Player does not come on after firmware update

I recently downloaded the Sandisk firmware update software and completed the newest firmware update. While is was updating the firmware I  turned off the player before the firmware  was finished updating. It will not power up now nor can it reset. Anybody know what the solution is even if I have to send it in to be repaired, I have 2700 songs downloaded to it.

What happens when you plug it into your computer? Will it power up?

No, it will not.

Ok. I have it on a charger by itself.

Does anyone know who I have to send the unit to at Sandisk? I bought the unit while in prison 3 years ago and have downloaded 2700 songs to it, so it is valuable. I am relatively good with with computers  and devices. I sent the unit into Sandisk when I got out of prison 2 months ago and they deinstitutionalized it. It was working fine until this happened.