2 Methods To Toggle Touchpad/Trackpad in laptop
Method 1. Use Function Keys
You can use Function keys to toggle the state of the touchpad, like Fn + F5 to disable touchpad on Dell laptops, hold the top-left corner of the touchpad for a few seconds to disable HP laptops, or Fn + F7 to disable the touchpad on some other PCs.
Method 2. Go to Control Panel
Control Panel -> Mouse Properties -> Touch Pad