CAUTION: This article contains information about using Registry Editor in Windows. For TTU-owned devices, contact your primary support provider for assistance. Make sure to back up the registry before you use Registry Editor, even if you only intend on viewing information, in case inadvertent edits occur. There is no "Undo" option in Registry Editor! Make sure that you know how to restore the registry in the event that a problem occurs. For more information about how to back up, restore, and modify the registry, please view the Microsoft support article How to back up and restore the registry in Windows.