Windows 10 touchpad problems?

I'm running a Windows 10 Lenovo Laptop and it has a "Synaptics Pointing Device" as a mouse model, whenever I press a key my mouse will stop moving and functioning and I can't get it to stop, I supposedly fixed it when I typed in mouse in the windows 10 search bar and went to "Mouse and Touchpad settings" before setting the touchpad delay to none (always on) and it still doesn't work even after I restarted my computer! Can anyone help me?

I use a USB trackball, the touchpad interferes with my typing and it a royal pain. You can just plug in a wireless mouse and not worry about it. But if the machine is under warranty, you should see about getting it fixed.