Windows 10: fix ‘two-finger scrolling’ issue for Synaptics touchpads

UPDATE July 31, 2015 A good solution for users who have upgraded from Windows 8 / 8.1 is suggested in the comments by Tobias Shen: The final solution was I uninstalled my Lenovo Pointing Device driver [device manager, mouse and other pointing devices], went to their website and downloaded the Windows 10 mouse driver. After…