the 3 rapid fire lasers you are talking about are the ones that you destroy, yes? well in the long shaft through the hole after you destroy them, go there (after you shut off all of the lasers) and walk towards the hole in the ceiling. yes, a reborn should drop down, kill him, and force jump your way up the hole. maybe youve done all of this, possibly a bug is keeping the reborn from coming?
Okay, for brevity's sake:
Personal Computers > Consoles.