This morning I decided to run the Apple Service Diagnostics on my 17" PowerBook. In order to power on the system I had to first reset the power manager using the "shift-control-option-power" key combination (though it looks as if only the power key might be necessary). This resets the date and time (a problem I've been having with the system). Upon starting ASD it stated POST detected an error but there was no additional information provided (such as what the error was). Is there a means to read the POST errors? If so what is the procedure to do so? Previous runs of ASD revealed no issues with the system so this POST error code might be what I'm after in tracking down the boot issue.