04-27-2009 07:27 AM
Go to Start and select Run. Type in services.msc and click Ok. Find SQL Server (ACT7) and start the service.
Do you have automatic Windows updates enabled? If you do, check to see if you have Microsoft® SQL Server® 2005 Service Pack 3 pending to install. If you do, follow the KB article below to install the update.
If you don't have the update pending, check your antivirus, spyware, etc.. to see if its scanning and possibly stopping the server . You can try disabling or excluding for a day to see if security software is causing the issue.