A computer system includes: a processor for executing a program code, a first non-volatile memory for storing a first program code for starting the computer system, the first non-volatile memory being functionally connected to the processor, and a system monitoring module which is functionally connected to the processor and to the first non-volatile memory and is configured to monitor the computer system for the occurrence of a predetermined condition. The system monitoring module includes a second non-volatile memory for storing a second program code for starting the computer system and is configured to copy the second program code from the second non-volatile memory into the first non-volatile memory when the predetermined condition occurs, so that the second program code replaces the first program code and is available for subsequent starting of the computer system.