Microsoft OneNote lets you create and organize notes in an electronic notebook. It includes features for creating notes with sound, clips from Web pages and screenshots of windows on your desktop. If you don't use OneNote or want to free up some hard disk space, you can uninstall the program without uninstalling Microsoft Office completely. If you decide to use OneNote in the future, you will still have the option of adding it back to your Microsoft Office suite.
Click "Start" and select "Control Panel." Click the "Uninstall a Program" link under the "Programs" heading in the Control Panel.
Select your version of Microsoft Office in the list of installed software, and then click "Change." Click "Add or Remove Features" on the wizard that opens, and then click "Continue." Click the drop-down menu beside "Microsoft OneNote" on the "Installation Options" screen, and then select "Not Available."
Click "Continue" followed by "Install Now" to uninstall OneNote from your Microsoft Office suite. Click "Close" when the process completes, and then reboot your computer.