With the release of windows me, microsoft added a new built-in utility to their desktop operating systems which allows to roll back system files and settings to an earlier point in time without affecting personal files. it provides a yet another way to undo system changes to the computer when an installation of a new program or device driver causes a problem and uninstalling doesn't fix the problem. the utility's interface contains a list allowing the user to bring back the system to the state it was in before the selected event. items on that list are called: