Unable to get rid of the latest snapshot from appearing in the "Unnamed"*. (*-I don't know what this function is called.)

I am unable to get rid of the Latest Snapshot from the drop down menu at the starting screen that shows all of the installations you have, and I turn off shapshots in the installations page but it is still there. As far as I know this is on Windows. I don't know if this is on any other computer type.