A clickable lightning bolt icon reveals and executes the suggested solution. Interesting things began to happen when I ran the application program and data files test. Obviously Norton 2000 was not leaving anything to chance. Another thing that it did was to pull out whichever cells were related to the 'culprits' in the form of an equation, function or relation. May be we would say the same thing if it didn't and the data up blew in your face.
Patience is a virtue here.
Two-digit date fields are prompted for replacement, and I felt that a payroll or HR data file would be painful. There are options to change the cut-off period for warning. Only some of the errors can be corrected straightaway. Application program errors would require you to visit the respective websites and pick up the solution fix posted there or junk them altogether if they are that ancient. The system BIOS can be checked with another application, Norton 2000 BIOS Fix.