dwlpl . . . . .
You don't say whether it's solved the initial problem of start up/close down; if it has, I might be tempted not to get involved with the registry. ...Everyone is getting event entries now and then.
However, on that front I'm sure you will find a lot of people's favourites on here. ...Personally I have been using
RegSeeker for a couple of years (free). ...I warn you now though, before you get alarmed, it will invariably throw up dozens, sometimes hundreds, of entries on initial run. ...I would only fiddle with anything you are completely sure about and it's
essential you have the Backup facility enabled (bottom left); maybe System Restore 'on' for double backup to previous state.