Ok, you helped me before with computer, hopefully you can help again! It is bit complicated so here goes... When I am running internet explorer the small tool bar in the top left hand corner of the screen (where you can minimize, reduce and close) flickers intermittently. When ever I visit a website that has a drop down menu and I try to use the menu, at the moment of flicker internet explorer closes the menu. My favorites menu also reacts in the same way. Also, if I open any other programme, say word for example the very edge of the window it is openedin lso suffers from this same flicker and if I try to start a game, hilst it is loading up it flickers and then windows minimizes the window it is opening in. As soon as I reopen the window, it flickers and minimizes again! I have checked my graphics card driver and checked or updates and all seems fine. anti virus software seems happy and I even downloaded a registry booster which has cleaned up my registry. If it is any help I am running windows vista on a dell studio. Any suggestions greatly appreciated on how to cure this!