Patent ID: 7490252

Claim:
An abnormal power interruption internal circuitry protection method for use with a computer platform of the type having a plurality of processing units for protecting the internal circuitry of each of the processing unit in the computer platform in the event of an abnormal power interruption, which comprises: in the event that each of the processing units is being plugged to the computer platform, registering an identification code of each of the processing units; setting an active status flag associated with each of the processing units to true value if the associated one of the processing units is set to active operating status, and otherwise setting the active status flag to false value if the associated one of the processing units is set to inactive status; in the event of a change to the registered identification code, issuing a backup power shutdown enable message under the condition that the active status flag is currently set to false value; and otherwise, issuing a main-and-backup power shutdown enable message under the condition that the active status flag is currently set to true value; and in the event of an abnormal power interruption to the computer platform, fetching a remnant amount of electrical power left in the computer platform to respond to the main-and-backup power shutdown enable message by successively performing a main power shutdown procedure and a backup power shutdown procedure to shut down both the main power and the backup power of each of the processing units, and otherwise respond to the backup power shutdown enable message by performing a backup power shutdown procedure to shut down the backup power of each of the processing units.