Which touchpad driver to install?

My niece just bought an Acer Aspire E1-571G without Windows and I have installed Windows 8 on it. Everything works. However, there are two base system devices in device manager which have exclamation signs on them. Also, I am unable to figure out which driver to install for the touchpad. The Acer support site has touchpad drivers for Alps, Elantech and Synaptics. Which one should I install, or should I just stick with the default driver that Windows 8 has installed?

EDIT: the two base system devices disappeared after installing the driver for the card reader.

 

See if this app from Acer is of any help- it's supposed to detect hardware to help you choose the driver.

 

Thanks, I'll give this a shot.

 

Sorry. All it says is:
LAN Broadcom
VGA Intel
Wireless LAN Atheros

Currently the driver loaded for the touchpad is P/S2 compatible mouse. I suppose I could try them all one by one and see which one takes, but I'm hoping there is a better solution.

 

You can always check the device ID in the device manager and google it.

 

This is what I can see:

ACPI\VEN_ETD&DEV_0500
ACPI\ETD0500
*ETD0500

*ETD0500
*PNP0F13

Googling gives inconclusive results. The driver is reporting generic information - nothing hardware specific. It seems that all three drivers will work and give basic functionality, but only one will enable advanced features.

 

Ok. I spoke to Acer customer care/technical support. The guy assured me that it was Synaptics, and that was the driver that I was supposed to install. Well, I did that, and I can see settings for the buttons only - none of the advanced features that a touchpad is supposed to have. So much for technical support. I'll try the Elantech driver next.

 

Success! Elantech it was. A tad disappointed, though, that the only approach that worked was the trial and error method.