After manually stopping SQL Server instance service it can not be started both manually from a SQL Server Configuration Manager and automatically by restarting computer. If trying to do it manually I get a message:
The request failed or the service did not respond in a timely fashion. Consult the event log or other applicable error logs for details.
In event log I can see following:
Event ID 7024. The SQL Server (RBSQL) service terminated with service-specific error 126 (0x7E).
I use SQL Server 2008 on Windows XP Pro