After a complete disk wipe on my Acer V5-573G I installed Windows 8.1 and the synaptics drivers for the touchpad, version 126.96.36.199 which I downloaded from the Acer Website.
The driver install did not show any errors, but the touchpad is not recognized as a Synaptics Clickpad V8.1 (as it was before the reinstall).
Under Mouse Properties > Device Settings it is shown as Standard pointing device on PS/2 port.
In device manager it is shown as Synaptics PS/2 Port Touchpad.
I also tried to install the latest driver from the Synaptics website which shows version 17.0.19, but the installation fails with a generic "Installation failed" message.
My problem is now that I cannot access the advanced settings for the touchpad. How can I fix this?