How can I disable the touchpad on my Dell Latitude D620. Just recently started having this problem. When I am typing I guess I brush it with my thumbs and the cursor is jumping all over. So very hard to type anything.
Remove the Keyboard and disconnect the cable to the track-pad which is separate from the keyboard.
Dell™ Latitude™ D620 Service Manual
Removing the Keyboard
Replacing the Keyboard
system board connector
touch pad connector
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Welcome to the Community. The Latitude D620 does not have a function key to temporarily disable the touchpad. However you can disable the touchpad, by click on start, control panel, mouse, click on the Dell Touchpad Image, click on device select, and you have an option to disable the touchpad there. If you use an external mouse instead of the touchpad, you also have an option there to disable touchpad when USB mouse connected.
Hope this helps.