From the September 2009 issue

Is it possible for a large star to collapse itself out of existence rather than just forming a black hole?

Martin Andrzejewski, Mustang, Oklahoma
By | Published: September 28, 2009
Black Hole in M82
Two x-ray images of the central region of M82. left: The region around the black hole is glowing with x-ray radiation. right: Here the region is dim, indicating that the black hole has engulfed the matter surrounding it.

Therefore no, a large star could not collapse itself out of existence.