Hello,
I apologize, however this is a bit difficult to understand.
Could you be a little be more specific and provide more details?
Are you talking about a Application Logs/ System Log in the Event Viewer showing Server Reboot? Is this in Reference to Symantec?
OR
Are you talking about a Threat detected by Symantec which states to Restart the machine? If yes, that's Normal.
Check this Article: http://www.symantec.com/docs/TECH102052
Hope that helps!!