There were a few laptops in the office that shared a similar problem, the mouse cursor would go beyond the right of the screen. So instead of the cursor/pointer stopping at all 4 edges of the screen, when you moved it towards the right side of the screen it would continue on past the edge of the screen, in result losing the location of your cursor.

I figured out that the culprit was the display adapter that is installed along with the software required to use our Epson projector. It was a simple fix all I had to do was the following:

1. From the desktop right click and open the properties window, then the settings tab.
   
2. There will be a number of “displays” shown as numbered boxes. Your main display (1) and one or two others (2 & 3).
3. click on the secondary displays and uncheck the “Extend my Windows desktop onto this monitor” setting towards the bottom. That should fix the problem.