Restoring a computer to an earlier time is simple when using Windows Restore. Although the steps vary slightly between Windows version, the steps are basically the same. It is important that the person performing the restore has administrative privileges before beginning.
To find System Restore, click "Start," "All Programs," "Accessories," "System Tools" then, "System Restore."
On the welcome screen, choose "Restore my computer to an earlier time" and click "Next."
This screen brings up a calendar. Choose the restore point desired and then click "OK."
Confirm the restore point selected and click "Next." The restore will run by itself until it is finished. This may take several minutes to complete.
Running a system restore can usually solve problems caused by recently installed programs. It does not affect personal files. All email, photos and documents are safe using this method.
Sometimes, using Windows Restore will not solve a system's problems. If this is the case, the restore can be reversed and there are plenty of support options available to help on the Microsoft homepage.