The HKEY_CURRENT_CONFIG subtree (HKCC) stores configuration data for the current hardware profile .
This subtree does not contain any data. It just stores a pointer to the content of the Current subkey in the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\ Hardware Profiles subkey. The content of the Current subkey appears in HKEY_CURRENT_CONFIG, and it can be viewed and changed in either location. This subtree provides easier access to the data.
Hardware Profiles subkey