Disable touchpad under Win 8.1 on G580

Starting with Win 8.1, there is no Lenovo driver for the Elan touchpad. It's provided directly by the Win 8.1 OS.
Now, in previous OS, I could deactivate easily the touchpad, by entering in Mouse applet from Control Panel. Now, this procedure isn't available. More than that, in PC settings>PC and devices there is a Mouse and touchpad option, but not sliders for On/Off as should be.
So, how can we disable the touchpad?
Screenshot
Solved!
Go to Solution.

Hi Gdvlad,
Welcome to Lenovo Community!
I’m sorry to hear that the Touchpad is not disabling after updating to Windows 8.1. Hence, I suggest you to press Fn+F6 together to disable the Touchpad. If this is not working, the Fn key features works only when the LEM (Lenovo Energy Management) in your computer and let me know the findings. Below is the link to download the exact LEM for the computer:
Lenovo Energy Management for Windows 8.1 (32-bit, 64-bit)
Hope to hear back soon
Best Regards
Shiva Kumar
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