Menu bar across top (File Edit, etc) when I click on any item in menu bar across top, drop down menues will not stay down unless you right click or hold the left button down and navigate to the selection you desire. All other software operates fine. Normal operation should be for example, you click on FILE and a dropdown menu is displayed and will stay there until you mak a selection. Mine won't continue to display... it stays visible as long as you hold the left mouse button down.