simple way to restore a win7 system:
1, first open the Control Panel in the Start menu, open the Control Panel, the Control Panel in a number of options to open the Backup and restore options;
2, then select the Restore system settings and the computer in the next interface. If your computer does not turn on the restore function, you may need to turn on this feature;
3, and then open the System Restore, that is, click on the image shown in the button, if the account control will be prompted to pass;
4, and then start to restore the Files and Settings Wizard, you need to follow the wizard's instructions to do it. Direct Click Next;
5, in the System Restore point option, select a restore point, to ensure that the selected restore point is the system before the normal restore point, because if it is an abnormal restore point will be a problem;
6, after the determination, will appear a confirmation page, above shows the detailed information about the restoration, you want to make sure it has no errors, click the Finish button, start the System Restore, the System Restore will restart, and then in the process of the boot into the relevant restore operation.