THERE IS NO MYSTERY OVER WHO WROTE THE BLUE SCREEN OF DEATH, DESPITE WHAT SOME MAY WANT YOU TO BELIEVE

Summary from the TLDR Web Dev newsletter

The Blue Screen of Death, a notorious part of Microsoft's history, has a clear authorship for each of its iterations. Steve Ballmer is credited with the text of the error message in Windows 3.1, which was not a true "blue screen of death" as it displayed a black screen with an error message. The Windows 95 kernel error was actually brought to its final form by Raymond Chen. John Vert is the author of the true "blue screen of death" associated with Windows NT.