Obviously not an original. There was no electricity in the sixteenth century, not even in the expensive homes.
Most of the castle's rooms are not furnished; the contents were either looted or destroyed during and after the revolution. It's a big, mostly empty, shell of a building. What furniture there is was recovered from elsewhere or recreated. Sections of the castle are used to display contemporary art exhibits.
I think I'll leave Chambord for now and move on to other things.