1. A password processing system for a computer, comprising: first storing means for storing a password necessary for the operation of the system; querying means to query a user for a response to a password challenge; second storing means coupled to said first storing means for storing a first program by which whether or not a computer can be started in accordance with a concurrence between the stored password and the response from the user; third storing means for storing a second program by which the stored password can be discarded or ignored; first program executing means coupled to said first storing means and said second storing means for executing the first program stored in said second storing means based on the password stored in said first storing means; connecting means for removably connecting a password bypass device to the password processing system; providing means, coupled to said third storing means, for providing a password canceling data in response to a connection of the password bypass device by said connecting means; and second program executing means for executing the second program stored in said third storing means, so as to discard or ignore the password stored in said first storing means when the password cancelling data is provided by said providing means, thereby allowing the computer to start regardless of the password; and wherein said first and second executing means are coupled to said computer.