System Restore is Windows software that creates restore points, a "memory" of the system files and settings on the computer at a particular point in time. System Restore creates restore points automatically and you can create a restore point as needed.
When System Restore is used to restore the system, it replaces currently used files and settings with files and settings from another time. For example, after a new computer is started for the first time, a restore point is created. Two days later, several system files are accidentally removed causing Internet Explorer to stop working. With System Restore, you can restore the system back to the first day, fixing the problem.
If the problems do not go away or become worse after performing a system restore, you can use System Restore again to go back.