Sql server all logins are disabled
<p>I have the sa login disabled, and I disabled by mistake the other login that is used with windows authentication (named: [server_name]\[computer_name]). Now I can't access the properties of that login to enable it, and I can't run a script to do that...</p>

<p>So now, what is the way to reconnect, should I reinstall sql server? Is there any other way?</p>

<p>I tried this solution: <a href="https://msdn.microsoft.com/en-us/library/dd207004.aspx" rel="nofollow">Connect to SQL Server When System Administrators Are Locked Out</a> but still unable to login after starting sql server in single-user mode.</p>