Windows 7: Cursor disapears in fullscreen applications (Windows 7) - FIXED

-- Problem was in duplicating screens --

It've helped me. I went to the "screen resolution" menu by clicking at the desktop by right mouse button, then in the appeared window "Screen resolution" in the left bottom corner you would find some options. We need "connect to a projector", click on that, then choose "computer only". And you would able to see that you have at first display a picture "1", then click in the right upper corner "Identity" and it would shows the big picture of 1 number on the screen.

If you have duplicate displays on one screen it causes the cursor dissapear in fullscreen apps. Seems such thing happens when you have hybrid technology ( two video cards). Some of drivers do the sharing. Wish it would helpfull.