tochpad don't work

@pyaar you are not giving us a lot of information. You are not telling us if this just stated or if anything happened. you are also not telling us what you have checked and what you have tried to fix it.

The very first thing you want to check is to make sure that your touchpad is enabled. You should get this done via your keyboard. FN + F6 or FN+F7 will enable/disable your touchpad.

If that does not work, update and reinstall your driver. Check on the Acer website for the drivers

After that, you will have to open your computer and check the physical connection. Also, if you have a battery that is old and starting to swell, it will impede the function of the touchpad. So, take a look at that as well.