How to disable the laptop touchpad driver?

I would recommend that you look at the manufacturer's website (e.g. http://www.synaptics.com/resources/drivers ) and download a Windows 8 version - these usually have a "disable" button or hotkey you can set which is the best solution.

If you are having no luck and as it is greyed out, you can always click "Driver Details", see what it uses and manually delete those files - but, I highly advise YOU DON'T do this.

The shortcut keys method Fn+F1, Fn+F2, ..., Fn+F12 is working for me on Windows XP and 7 to disable laptop touchpad. FN + F12 worked for me on Windows 8

It's very easy.. Change the driver to another..

Click right mouse button to "PS/2 Compatible Mouse" > choose update driver > driver from your computer (not automatically) > choose driver from list > unclick "Show compatible hardware"...and choose another type (I chose mouse from Acer - API USB). Your touchpad will be disabled after restart of your computer. Then (for sure) click on disable driver in your device manager.

Since then everything is fine and my touchpad is disabled..

On my Acer laptop I simply pressed F6 and the touchpad is disabled. Somewhere I saw u needed to press Fn and then F7, but that didn't work.