The touchpad on a laptop is a convenient way to add the functionality of a mouse without needing an extra peripheral. You may need to use the keyboard's 'Enter. Find your computer's touchpad and right click on it, then click 'Disable' to turn the touchpad off. Select the Windows icon in the lower-left corner of your screen, then select the gear icon to open Windows Settings. In the left pane of the window, click on Sep. Method 1: Disable the touchpad in Settings. If you press FN and F3 at the same time again the light above. Notice at the top of your touchpad an orange light came on this means your touchpad is disabled. Press and hold the Windows () key, and then press the q key. This ensures that you disable the correct device. Select the touchpad from the Device Settings tab. Please press windows key and X key at the same time, click Mobility Center,and then Turn off can also disable touchpad by typing. If you have the touchpad driver installed for your D you can even change. You can disable the touchpad when an external mouse is installed in the BIOS. How do I disable touchpad on Inspiron 1545 laptop Touch or click Mouse & touchpad settings (System settings).