No, still unable to login to SEPM. It is indeed a 64-bit system, so I had to use the modified procedure to get into ODBC, but am unable to follow just what is required to recover the password. Mention is made of "use the original SEPM password", but that's exactly what isn't working.
And until I can login to SEPM again, I can't reach the point where I would set up AD for authentication, so can't report the exact error message yet.
Since this is my own test environment, I thought it might be simplest to just clear out everything and start again with a fresh SEPM install. Is this doable? What's the best way of removing/clearing the current database and starting again? The only problem I foresee is this is now the 2nd time SEPM has started rejecting my passwords - what if this had to happen to one of my clients? That would be a far more serious issue.