title: I forgot my sql server 2008 r2 username an password
body: <p>I installed an instance of sql server on my machine a while back. 
  I generally login via SSMS. I currently forgot the username and password for the instance.
  Is there a way I can recover it.  I searched online including a pervious stack overflow post but didnt 
  find it helpful. Is there anything I can do to recover my username and password ?</p>