Back up Computer
System Restore is a method to Undo changes to Windows
without disturbing your documents or personal data. System
Restore makes a back up for the Windows Registry, and all of
your program settings.

3. Create a Restore Point
Log in as an Administrator
Go to Start-> Control Panel
Find System and Maintenance
Click on Back up your computer
Windows will request an Administrator's User Name and Password.
You will be prompted to review the automatic settings.