An OBD II-compliant diagnostic PC tablet and method are provided. The tablet enables the simultaneous display of diagnostic data from multiple systems. Further, the tablet enables retrieval of potential solutions in response to the diagnostic data. The tablet may be used to retrieve the diagnostic data from a given vehicle system. The tablet features a display screen, an input node, and a processor. The tablet may communicate with one or more remote databases obtaining diagnostic summaries therefrom. Thus, the computer receives the diagnostic data vehicle system, derives diagnostic information therefrom, and can use external databases to derive potential diagnostic solutions therefrom.