You can go here http://www.acer.com/ac/en/US/content/drivers
Find your model. If you upgraded to Windows 10, you won't find any Acer supported drivers.
Tap Windows key+x and select Device Manager. Click the arrow on Human interface devices and see if your touchscreen driver is there. If not, go to view and click Show Hidden Devices. Right click it and update.
It looks like you're new here. If you want to get involved, click one of these buttons!
to get all the benefits
of being a member!
Get social and introduce yourself in our
or learn about our ACE Program
and What's Happening
Acer Community User Agreement.