Sometimes installing a program or driver can make Windows run slowly or unpredictably. System Restore can return your PC's system files and programs to a time when everything was working fine, potentially preventing hours of troubleshooting headaches. It won't affect your documents, pictures, or other data.
In Windows 7, you can create more system restore points and see exactly what files will be removed or added when your PC is restored.
Before you start System Restore, save any open files and close all programs. System Restore will restart your PC.
Follow the steps in the wizard to choose a restore point and restore your computer.