I've been using Windows 8 for 5 months with minimal problems. This morning my internet screen suddenly changed--no idea what I did-- and left me with no menu bars or tool bars. Just a full screen with google icon and box in center of page. If i push to top, I get the tab for the open page where I can type in address. If I push to bottom, I get a handful of icons. By click on the help icon I get to a normal looking screen. How do I get to the normal opening screen which allows me to see all of the bars and the icon for windows?