title: SQL Server 2008 R2 : can't connect SSMS. Self inflicted Injury
body: <p>I appear to have done myself a nasty. </p>
  
  <p>While dinking around trying to get a CLR assy to run I deleted the user 'myserver\Administrator' in the security list at the bottom of SSMS. (Don't ask.)</p>
  
  <p>I then restarted the SQL Server engine and now I can't connect to the instance as it is trying to connect with Windows Authentication using the deleted login. Managed to connect using a SQL Server login but it doesn't have enough grunt to repair the situation.</p>
  
  <p>Yep, some mothers do have 'em.</p>
  
  <p>Anyway out of this little conundrum?</p>
  
  <p>thanks</p>