Touchpad is locked
I have an Aspire E 17 ES1-711-P14W. A few years ago I found something online on how to lock the touchpad in the registry since I always use a mouse and the touchpad was interfering. Now I am having periodic trouble with my mouse where all of a sudden it stops working - new battery, shut off and back on - and have to shut the laptop down with windows open. Can't even do a CTRL-ALT-DEL. Now I want to unlock the touchpad in the registry to see if the touchpad will work when the mouse stops and I can't find out how to do that. I'm running Windows 10 Pro v1803. I know there is FNC F7 on the keyboard but it doesn't do anything when pressed.