In drop-down box at the top, choose Desktop . A backup copy of the entire registry will now be saved to your desktop in case something goes wrong. Now you can proceed to the section Changing or Deleting Items in the Registry . Yes when it asks if you want to import the information into the registry. Once you've made changes to the registry and you are sure that you no longer need the backup file you made, simply delete it from the desktop.
Values are configuration settings that contain data, and the data is the setting itself.
When you read instructions for changing the registry, you will often be given the location of the key where you need to change or delete a value. You would then be asked if you were sure that you wanted to delete this key, at which point you would click the Yes button. In the example above, you were asked to delete an entire key. Often, you may be instructed to change or delete a value within a key. When you are done changing the data, click the OK button.