Determining Touchpad Manufacturer - Acer 5741

I just had to replace the top cover, including touchpad, on an Acer 5741 running Windows 7 64 Home Premium. The cover appears identical to the old one, and everything works, but the symantics touchpad software doesn't recognize the touchpad as a touchpad; it shows as a "wheel mouse on PS/2 port". Therefore, I can't turn off the incredibly annoying "tap to click" function, nor can I stop it from activating windows on "hover", although that should be a Windows function.

When no drivers are installed, Device Manager just sees it as a PS2 Mouse. When drivers are installed, Device Manager sees it as Synaptics PS/2 Port Touchpad.

Acer identifies three manufacturers of touchpads on the 5741 on its support website. I have tried all three; ALPS, Synaptics, and Elan; the Synaptics drivers install and work as above; ALPs installs but doesn't provide any control, and Elan doesn't even install.

Does anyone have any suggestions on how to determine exactly what the hardware is, or how I might correct this?

Thanks!

 

Solved:

I determined that the touchpad in the replacement top cover was from Elantech. Even when deleting the Synaptics drivers under "uninstall programs" and deleting the driver in device manager along with the "PS/2 mouse" the device ID code implies that the hardware manufacturer is Synaptics. I downloaded the "Acer" versions of all three manufacturers' drivers from the Acer support page, then extracted them all to separate directories. I then installed and uninstalled them all. The key was to use "Update Driver" from within Device Manager to get them to properly install. That was hours of my life I'll never get back!