The movie is about a non-technical guy being challenged to make a very cheap computer (if I remember correctly under 20 dollars). Finally he makes the computer, that has a holographic display, no keyboard, no mouse etc. I can't recollect the name of the movie.
That sounds like The First $20 Million Is Always the Hardest (2002). A former marketing guy is assigned the task of designing a low-price PC. The target price was $99, but it did have a holographic display in place of a monitor.