When I turned on my Surface Pro 3 the machine booted but the start menu is missing. Nothing happens when I highlight and click the Windows icon. If I right click I get a Windows 8 menu that begins with "Programs and Features". I also cannot window applications. They all come up in full screen mode and clicking on the window icon in the right corner does nothing. Finally the menu that is supposed to display when you swipe the right side of the screen doesn't. I have done a full reboot by pressing the volume up key and power key simultaneously and it booted normally. How do I fix this?