Abstract: A computer system has a plurality of components which can be initialized. A plurality of components can be initialized and each component is configured to produce status data from which the level of need for that component to be initialized can be inferred. At least one component is configured to: receive status data from other components; make a comparison using the status data received from respective components; in dependence on the comparison, select one or more components for initialization; and, issue initialization instructions to the selected component(s). By making a comparison between the status data from different components, the relative need for different components to be initialized can be evaluated, allowing a component with a high need for initialization to be selected over a component with a lower need.