Delete keys or their values from the registry.
:: To delete a specific registry key:
reg delete <key_name>
:: To delete a value under a specific key:
reg delete <key_name> /v <value>
:: To delete all values recursively under the specified key:
reg delete <key_name> /va
:: To forcefully delete all values recursively under a key without a prompt:
reg delete <key_name> /f /va