Calm your jumpy mouse cursor, make special keys work properly and stop random scrolling on a laptop
Cursor jumps around your laptop screen
If your laptop’s cursor won’t stay still on screen, chances are the touchpad is the culprit: one wayward brush of your wrist and your cursor zooms all over the place. If you have a modern multi-touch touchpad, you may even experience a lot of unwanted scrolling or zooming.
To take control in any Windows version, press Win+R then type main.cpl and press Enter. Now select the Device Settings tab, click to select the touchpad and then click the Settings button. Available options vary, but you’ll definitely be able to disable the touchpad completely, or even just tweak its sensitivity so it ignores accidental input.