After upgrading my machine to Windows 7 running some updates, everything seemed to be working fine. This morning I was unable to start my development SQL Server because, my 'SQL Server evaluation period has expired.' Normally, this wouldn't be a problem, since I've been using the express editions for everything -- or so I thought. Somehow my working instance was switched from SQL Server Express to SQL Server. I have no idea how this happened, but I need to fix it.
Is there any way to fix this without loosing my data?
[snippet from the error log]
2009-12-28 13:47:27.89 Server Logging SQL Server messages in file 'C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\Log\ERRORLOG'.
2009-12-28 13:47:27.89 Server Error: 17051, Severity: 16, State: 1.
2009-12-28 13:47:27.89 Server SQL Server evaluation period has expired.