To install OpenCV on Windows, start by visiting anaconda.com and navigating to the products tab. Select 'Individual Edition,' download the 64-bit graphical installer for Windows, and complete its installation while ensuring you add Anaconda3 to your PATH environment variable. Next, open a command prompt to create a virtual environment using `conda create` with Python version 3.8 specified; activate this new environment afterward. Within the activated virtual environment, use `pip install opencv-contrib-python` to install OpenCV along with necessary packages. Verify successful installation by entering a Python console via typing "python," importing cv2 (`import cv2`), and checking its version (e.g., 4.5.1). This confirms that everything is set up correctly.