If even with the latest drivers version your touchpad won't work properly, did you try uninstalling the drivers completely - restart - and reinstalling them?
You can also try installing the default drivers before choosing the updated ones. Sometimes, new versions of drivers may not be fully compatible with your peripherals.
Check also your touchpad settings (sensibility...) in Settings > Devices > Touchpad and try adjusting them from there. If necessary, access the additional settings.
If it still won't work properly, open your laptop to check the touchpad connectors. Alternatively, take your laptop to a local technician.