The term Blue Screen of Death
originated during development of the IBM OS/2
operating system at Lattice Inc
, the makers of early Windows and OS/2 compilers
. Developers encountered the error screen when bugs in the operating system's software (typically null pointers
) slipped through the net during beta testing. In feedback to IBM
, a company known informally as 'Big Blue', the developers humorously described the Stop screen as the 'Blue Screen of Death' in consequence of its color, of the association of that color with IBM, and of the finality of the error (which caused the computer to hang without any possibility of recovery, requiring a manual restart.