Hi,
Other than a whole lot of guessing, I think you will have to do a "reset to factory defaults" and if you were cleaver enought to save a copy of your config file, you could use that to restore all of your settings. Failing to have a saved configuration file...option 1 is your alternative. Once you get lucky or give up on that one, do the "reset" re-enter all your settings and save the new configuration file in a folder somewhere and add a little txt document with your admin password perhaps. Good luck