Hello Everybody. 
I need help for my Aspire 3 Touchpad
Model A315-21-95KF
OS: Windows 10 Home
My  Aspire 3 touchpad stop working for week, time to time.  
When I reboot, it start working again, but it stops soon.   When touchpad stops, presssing F7 key or Fn+F7 does not fix the problem.
I look  for device in Windows 10 DeviceManager, but there's no touchpad drivers, except Human Interface drives.  
At Acer I found two drivers From Acer Download : 
    
        https://www.acer.com/us-en/support?search=75000000176;NX.GNVAA.002;A315-21&filter=global_download
    
 
acer.com/us-en/support?search=75000000176;NX.GNVAA.002;A315-21&filter=global_download
 However these two are not originally listed in Device Driver.  There are two Touchpad drivers, but which one and how to install?  From Synaptics or  ELANTECH?
- Date:2017/05/10
- Version:19.0.25.8
- Vendor:Synaptics
- Size:628.53 KB
 or
- Date:2017/05/10
- Version:13.6.9.4
- Vendor:ELANTECH
- Size:7.16 MB
