[dba-Tech] Windows Task Bar

This morning, my Windows Task Bar is docked to the right hand border of the screen. It's usually at the bottom. I didn't move it and none of the kids have been at the computer since the last time I used it and it was at the bottom. I don't suppose I really care how it happened, I just want to move it back to the bottom. 

The handle doesn't work -- I click and drag but the bar won't budge. The Lock property isn't checked. I've reviewed the properties and other settings, but so far, I haven't found anything that explains the position. 

How do I get it back to the bottom? 

Susan H.