Im an older user and do not understand what to do the way others describe. After some updates , l lost that whole top line as l described above. Sometimes it appears very briefly but travels very quickly upwards before l can click on anything. I am then faced with a large white page with no bar at the top with all the useful icons . And no bar at the bottom to connect to internet or adjust sound . Just one big white expanse. I am at my wits end. Ive been using Alt,Cltr,Delete to exit pages. l cannot even exit this page.