Helen Keller Mode

/he-lən ke-lər mōd/

n. State of a hardware or software system that is deaf, dumb, and blind, i.e., accepting no input and generating no output, usually due to an infinite loop or some other excursion into {deep space}. (Unfair to the real Helen Keller, whose success at learning speech was triumphant.)

See also go flatline, catatonic.