I adjusted the volume from lower right corner taskbar or toolbar where the clock is and it moved to a rectangular volume control box on the desktop. I cannot get it back. How did this happen and how can I get it back where it belongs? It doesn't respond to anything like moving it but it does adjust volume. Maybe if I shut it down now it will be back in place on restart. But I don't know what I did to move it. It is on top of windows.