The problem is there are still some hidden files executing, & even stopping them in Terminal may no prevent them reloading.
Spotlight won't find the files you need, get Find Any File...
Hold Option or alt key when selecting Find to Find All.
Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...