The steps below show you how to disable tap-to-click. The tap-to-click functionality for a Chromebook touchpad can be turned off while still allowing you to use the touchpad to move the mouse cursor. How to disable the touchpad on a Chromebook Disable touchpad tap-to-click functionality When your external mouse is unplugged or otherwise disconnected, the trackpad is automatically enabled again.
How to disable the touchpad in Windows 7 and earlier Using a mouse and keyboard Press the spacebar to change the toggle switch to the Off position.In the Touchpad settings window, press Tab until the Touchpad toggle switch is selected.Or, press Windows key+ I to open Settings and use the Tab, arrow keys, and Enter to choose Devices, then Touchpad. Press the Windows key, type touchpad, and press Enter.See: How to navigate Windows using a keyboard.
Once the touchpad is disabled, you need an external mouse to navigate in Windows, or you can use your keyboard to navigate in Windows.