Don't know if this will help you, but I had a similar problem with my mouse scrolling. Everybody I asked to help referred me to control panel/mouse, to no avail. I decided just to live with it. Eventually I decided to get a better graphics card for another problem that had developed. The first thing I noticed on starting my pc back up, was the mouse was performing as it was supposed to. I asked the engineer what he did, he said he did nothing, he did'nt know about my mouse problem but was'nt too surprised as the mouse is connected to the graphics. I know nothing about the workings of computers but perhaps this is an alley you could pursue. Best of luck!