As far as I'm aware if there are no detections in the boot-time scan or any scan for that matter, it has no retained data for Detailed report.
Unless you change the report statistics to include OK files, etc. (and you are going to get huge data files), then the only data recorded would be what you already see in the Lower window run time, tested files (numbers, no details) tested folders, data tested and that is pretty much all you would get.