jajaja this "Program" is very hard to kill...
I exported then deleted the entry, restarted and what a surprise, the "Program" is still in the star-up list and now is enable. Then I went to the registry and the entry is there again, like if it had been created again.
In fact, this "Program" doesn't have any impact in the performance but I would like to delete it anyway because it refers to a file that doesn't exist. This should be some kind of bug or something.