Elan Pointing Device list does not show touchpad on Lenovo y510p

Question

In an attempt to get a newer version of the Elan touchpad drivers, I have disrupted Elan's ability to see the touchpad device in the list of devices:

Here you can see nothing is showing :

But the device shows up here and in the Device Manager as well:

How can I get it back on the device list? I thought about editing the registry under Elantech/DeviceInformation because that looks like where it stores the hex addresses, but the odds of that being successful are very slim.

I tried installing other versions but none seem to fix the issue.

I tried uninstalling the hardware for the touchpad, then reinstalling the drivers for Elan, and it persisted.

I tried installing the drivers with windows 8 compatibility and Run As Administrator.

I tried doing an update drivers/rollback drivers to the 11.4.26.1 version and it continues to have this problem. When the ELAN drivers are not installed, there is a generic microsoft controller that it defaults to.

Edit: Tried uninstalling drivers for both the pointing device and the Elan SMBus.

Solution

I solved it! In this solution, I reinstall the original drivers then install a newer version of the Elan touchpad drivers from acer. I set the touchpad device as an ELAN PS/2 Port Input Device instead of a Lenovo pointing device.

Steps:

1. Right click Uninstall Lenovo point device under Device Manager --> Mice and other pointing devices)
2. Right click Uninstall Elan SMBus Driver under Device Manager --> System Devices
3. Restart
4. Run the installer from Lenovo's download list for the y510p.
5. Restart
6. Download/Extract anywhere Acer Notebook Aspire V3-771 drivers TouchPad_ELANTECH_11.6.28.201_W81x64_A.zip
7. Open Device Manager and go to the Lenovo pointing device under Mice and other pointing devices
8. Select the Driver tab and select Update Driver...
9. Select the second option, `Browse my computer for driver software
10. Select the green arrow option, Let me pick form a list of device drivers on my computer
11. Select the button Have disk...
12. Navigate to the folder where the acer drivers are extracted
13. Select the ETD.inf file in the corresponding folder to your OS - 32 or 64bit.
14. Select ELAN PS/2 Port Input Device
15. Accept the disclaimer to install the drivers and restart after installation
16. Success!

It looks like the ETDCtrl that shows the properties has a fewer options than Lenovo's version. At this point I could try reinstalling the Lenovo drivers again.

Ironically, this solution of installing another providers drivers is what caused the original problem.

Comments

[Gaʀʀʏ]

Something obnoxious that has occurred with this version is that I no longer have the ability to enable/disable the touchpad on demand. FN+F6 does not work. I can only disable the touchpad by selecting the "Disable when other pointing devices are plugged in" option.