I have a VAIO windows 7 64 bit operating system. My scroll does not work for a while.I used to stroke the far-right edge of the touchpad for vertical scrolling and the bottom edge for horizontal but is doesn't work now.
I have downloaded and installed the latest driver for that but it didn't fix. I don't know why but I cannot open Control Panel>Mouse. As soon as run Mouse an error occurs and I have to close that.
This is the problem when I open Mouse in Control Panel :