Since I have updated windows 7 ultimate to windows 10 pro, my touchpad scroll is not working. I have tried everything but not working so far. Anyone who get it working? Acer aspire laptop 7730
I cannot comment and you have not posted enough information but here's the rough layout of what you need to do and check. I hope this approach helps.
When you do an in-place upgrade from one Windows OS to another the existing OEM drivers you had could have been over written or replaced by default new Windows OS drivers, which do not support all kinds of things that OEM specific drivers did or do.
Best thing for you to do is find updated drivers from the OEM - Acer for your laptop and OS (Win 10), which may take some time as Win 10 was just released
You could look for updated drivers from Synaptics as a second option
If none of this works right now, wait until they come
If you'd like to fix this right away, and do not wish to wait, it might be possible to "force install" OEM drivers from previous OSes on top of Windows 10 under compatibility.
Since I do not have an Acer machine or access to specific information, and given that lot of people will face this issue as they upgrade from Win 7/8 to Win 10, this is the approach you and them need to follow.