I recently had a situation where something happened to my SQL Server and I could no longer log in using windows authentication. I will get more into what happened in another post. Let me just preface all this by saying that I inherited this mess. Anyway, thanks to @afernandez and @banerjeeamit on twitter, and the article here explaining how to enable sa, I was able to get the sa account up, change the password, and then log in as sa to do what I needed to do. So thanks to all on #sqlhelp on twitter and if you are not on twitter yet DO IT!.