The objective of this research paper is to construct a presentation controller which uses hand gestures as the system’s input to control presentation. The OpenCV module is mostly utilized in this implementation to control the gestures. This system primarily employs a web camera to record or capture photos and videos, it allows real time recognition of hand gestures captured from webcam and translates them into actionable commands. This project is very helpful in a situation where the users cannot use any kinds of input devices or touch them, With the help of gesture recognition one can easily a specific action needed without physically access the input methods for example mouse, keypad etc. This research has used Machine Learning to detect gestures with subtle differences and tried to map them with some fundamental PowerPoint slideshow controlling functions using Python.