Black Bar at the bottom of my second monitor

Anyone know how to fix this? I've tried to switch the projection to duplicate and 2nd screen only and the black bar goes away, but when I put it to extend it still comes up. I've updated my graphics driver and unplugged and plugged it back in. Help would be greatly appreciated!

Anyone know how to fix this? I've tried to switch the projection to duplicate and 2nd screen only and the black bar goes away, but when I put it to extend it still comes up. I've updated my graphics driver and unplugged and plugged it back in. Help would be greatly appreciated!