Blue screen problem - Windows 7?

System Restore allows the user to restore the system files to an earlier point in time. It’s an effective way to undo system changes to the system without affecting the personal files, such as e-mail, documents, or photos. Sometimes, the installation of a program or a driver can result in an unexpected change to the system or cause Windows to behave randomly. This feature in Windows 7 helps you to save the system from the blue screen issue.