Touchpad not working

Hi,

I am reaching out to you because it's been a few month since my touch pad doesn't work anymore. I'v had this my alienware 14 for 3 years. And suddenly my touch pad stopped working. So i uninstalled the synaptic drivers and installed them back again, but every time i go in the mouse settings i get a message saying that my synaptic driver does not work and i have the choice with clicking yes to uninstall it or no to do nothing.

Thank you for reading,

cordially