Use Registry Editor
Windows 10
For instructions to access Registry Editor, click here
Warning! Improper use of the Registry can cause issues with a program or even with windows. Use caution!
There is five sections
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HKEY_CLASSES_ROOT - Often shortened as HKCR, is the registry hive in the registry of Windows. It contains the file extension association. It also has the programmatic identifier (ProgID), Class ID (CLSID), and interface ID (IID) data. For example, it knows a .doc file is for a word document.
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HKEY_CURRENT_USER - Often abbreviated as HKCU. Contains config information for Windows and software specific to the currently logged in user.
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HKEY_LOCAL_MACHINE - Often abbreviated as HKLM. Contains the majority of the configuration info for the software you have installed, as well as for the Windows operating system iteslf.
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HKEY_USERS - Often abbreviated as HKU. Contains user-specific configuration info for all currently active users on the computer
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HKEY_CURRENT_CONFIG - Often abbreviated as HKCC. shortcut to the HKEY_LOCAL_MACHINE hive. More specifically, to that hive's \SYSTEM \CurrentControlSet \Hardware Profiles\Current\ registry key. It's there that the information is truly stored - HKEY_CURRENT_CONFIG just provides a quick way to get there.
For more information, see https://www.lifewire.com/windows-registry-2625992 (this is a link to an outside website.)