RE: Touchpad issues in Dell Inspiron 11 3147 (Windows 10)
As a test then completely uninstall the touchpad driver and restart the notebook. With just the standard Windows mouse driver installed advanced functions of the touchpad like gestures wont be available but normal use of the touchpad will. Check to see if the touchpad stops freezing.
If removing the driver doesn't make a difference you may wish to contact tech support in your area and request a possible service. If you are in the US send me a direct message and I will be happy to research possible service options.
If after removing the driver, the touchpad starts to work better then replacing the touchpad is unlikely to help. Download and reinstall the touchpad driver and test again.
Specialize in Laptops, Mobile Devices