The process wininit.exe has initiated the restart of computer SRV55 on behalf of user for the following reason: No title for this reason could be found Reason Code: 0x50006 Shutdown Type: restart Comment: The system process 'C:\Windows\system32\lsass.exe' terminated unexpectedly with status code 255. The system will now shut down and restart. My server 2008R2 with SP1, randomly reboot.... What can i do to fix this? thanks.

Hello, please note that this is Windows 7 forum. You can ask here: http://social.technet.microsoft.com/Forums/en-US/winserverTS/threads http://social.technet.microsoft.com/Forums/en-US/winservergen/threads Is there any BSODs? If yes, please use Microsoft Skydrive to upload dump files (c:\windows\minidumps). Also, disable all security softwares that you have and update all your drivers / firmwares / BIOS. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator