On my new Toshiba laptop, my screen will seem to minimize on it’s own. If I’m on Excel for example, the words and cells will go really small and I’ll have to press “Undo” several times to get it back to normal. If I’m on a website, I press “Ctrl+” several times to get it back to normal. Am I doing something to cause this? I am wondering if there is a key combination or a key by itself that makes my screen do this…. it seems to do it by itself though! Please help!!