System Restore automatically recommends the most recent restore point created before a significant change, such as installing a program. You can also choose from a list of restore points. Try using restore points created just before the date and time you started noticing problems. The descriptions of the restore points that are created automatically correspond with the name of an event, such as Windows Update installing an update. System Restore returns your computer to the state that it was in before the restore point that you chose.
