by overlaying a problem indicating symbol 82 on the appropriate part of image 40 bi computer 40 c has detected a problem in the interface module it is running gui 10 overlaying problem indicating image 84 on the appropriate part of image 40 ci the u201c m u201d of image 40 ai indicates that the management module of computer 40 a is operational the problem indicating symbols are typically colored with different colors to indicate a level of severity of the detected problem at the time that the problems are indicated operator 28 selects image 40 ci to interrogate computer 40 c concerning its management module and gui 10 illustrates with a program symbol 86 and a message 88 that the status of the management module is ok fig3 f illustrates information received from disks 46 in a diagram 90 gui 10 shows that a bank 50 a of disks that have failed are rebooting by surrounding a colored image 50 ai with a different colored border 92 the different colors are shown in fig3 f as different shadings in a diagram 100 in fig3 g gui 10 indicates that bank 50 a has informed unit 11 of a problem by coloring image 50 ai operator 28 may interrogate each of the units in bank 50 a by pointing to clicking on its respective image in image 50 ai by way of example diagram 100 shows that on pointing to image 46 ai of storage unit.