My Defragmentation Process Was Interrupted And Can Not End It?

It really isn’t good when that process gets interrupted. However I suppose you really need to end it, have you tried to end it by using the task manager? Press ctrl+shift+esc and look at the applications tab and right click the problem app and click end. If that doesn’t work even after a few tries and you waiting around the only option I could suggest is to hard boot your machine. Look for the power button on your computer case and hold it down for a few seconds, and that will turn it off (some systems require you to let go after a while for it to boot, it differs from machine to machine). After everything has stopped spinning in your machine press the button again to boot it back up.