Do you have tiny little arrow icons on either side of the screen? If so click on those. The menus should appear.
If none, try clicking on the outermost edge of the screen on either side and see if that works.
Do you have tiny little arrow icons on either side of the screen? If so click on those. The menus should appear.
If none, try clicking on the outermost edge of the screen on either side and see if that works.