Track pad won't click at all can I turn it off?

The built in track pad started to have issues a couple months ago to where it'd only work for thirty minutes then it would't click any more. Now it doesn't work at all so I bought a bluetooth mouse. If I bump the trackpad accidentally it won't let me left click on the external mouse then I have to restart the computer to get it to work again. Is there a way to turn it off?

Thanks,

Mike