INT 15H 5309H: Restore System-BIOS Power-On Defaults

 Expects: AX    5309H
          BX    ffffH
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 Returns: AH    APM error code (if CF=CY)
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    Info: This function resets the power management BIOS and reinitializes
          all of its default settings.

          You may access this service via INT 15H or by using the APM entry
          address obtained via INT 15H 5302H or INT 15H 5303H (protected
          mode connect).

See Also: APM API
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