Sorry for the spelling. Autocorrect rewrites everything.

On my computor, which is simulator, this should have solved the problem. However the app for this appears to be missing. (Writing here is virtually impossible on my phone. Autocorrect changes every word to something simular on my language).

@BertStL  when I go to support.dell.com, search the Latitude 7390, and go to the Drivers section, I end up on this page.  If you type "Touchpad" in the search box, you'll see a touchpad driver and a touchpad assistant application.  Make sure you have both.

@jphughan​

I followed your instructions but if you can't click the icons of the right & left touchpad cursor buttons are deactivated how can you click on any icons if there are no buttons that work to click with such as space return or Windows etc? Just asking? Anyone know of a duplicate or back up click button forge mouse & pad doesn't work? Cheers 

@Bakker​ If your touchpad doesn’t work for clicking at all, then some applications allow you to use Tab/Shift+Tab to cycle around selectable elements of a user interface. And of course some menus and commands have specific keyboard combinations to activate them. But that depends on the application. If you need something universal, you might want to enable the Windows Mouse Keys accessibility feature. Or just rely on a USB/Bluetooth mouse.