You can roll back the clock, utilizing one of your System Restore points, with just a few clicks of the mouse. Before you do, however, make sure you're logged on as a user who's a member of the Administrators group. Also, be sure that no other users are logged on to the machine over the network, and shut down all running programs.
Once you've taken care of these housekeeping details, follow these steps:
Choose Start | Help and Support to open the Help and Support Center home page.
In the Help and Support Center, choose the "Undo changes to your computer with the system restore" from the Pick a Task list on the right side. (Alternatively, you could use Start | All Programs | Accessories | System Tools | System Restore.)
Click "Restore my computer to an earlier time," and then click Next to open the Select a Restore Point screen.
Select a date and choose a restore point. Note that some dates might have more than one restore point associated with them. Now, click on Next to open the Confirm Restore Point Selection screen, shown in Figure 13-13.
Figure 13-13. Confirm your restore point selection.
Verify the date you selected. It is also very wise to heed any red instructions you encounter in the Confirm Restore Point Selection dialog box. Especially make sure to close open programs and save work. When you're ready to start the Restore, click Next.
System Restore now copies the necessary files and settings from the System Restore archives. Your system will restart automatically.
If the restore point does not correct the behavior you expect, you can easily undo the restore operation. Just run System Restore again and choose "Undo My Last Restoration" to unrestore your restore, or whatever I'm trying to say. You know what I mean.