Touchpad scroll bar not working

I've upgraded my Windows 7 Ultimate 64 bit to Windows 10 Pro 64 bit under free upgrade program recently.
Since then my touchpad vertical & horizontal scrolling isn't working in any application.
Touch pad model is Synaptics LuxPad V7.4 having driver software 19.0.12.95 released on 15-July-15 (Latest)
My notebook model is HP G62.