So I was on my computer and all of a sudden the left click button on my mouse broke (just stopped working) It wasn't the standard apple mouse, just another regular mouse I use, I didn't know what had happened so I restarted my computer to see if that would fix it, it didn't so I got out my original apple mouse and started using that.
Everything was fine until I started iTunes to listen to some music, and when I pushed the volume up button (F11) on my keyboard (standard iMac keyboard) instead of turning the volume up it brought up the widget things, and that's when I realized that none of the buttons were doing what they were supposed to do

I don't know what I did? I just restarted my computer and changed the mouse. So I went into the keyboard settings and made everything default and it still didn't change. This is my first mac and its relatively new so I'm no expert. Any help would be greatly appreciated
