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Domain Controller keeps Restarting Randomly

Domain Controller keeps Restarting Randomly

I have Windows Domain Controller 2008, that keeps restarting randomly. when I checked the system log, I found this :

The process wininit.exe has initiated the restart of computer MYDC04 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.

This is Physical server, I checked it and did not see any apparent hardware issue, no amber or red lights.

I checked if there is any scheduled task and could not find one.

I really cannot pinpoint the root cause.

Any help will be very much appreciated.

Thanks

System Manufacturer: Dell Inc.
System Model: PowerEdge 1950
OS Name: Microsoft Windows Server 2008 R2 Standard
OS Version: 6.1.7601 Service Pack 1 Build 7601

SOLUTION

David Johnson, CD

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ASKER CERTIFIED SOLUTION

Manjunath Sullad

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jskfan

ASKER

I downloaded Update for Windows Server 2008 R2 x64 Edition (KB2749655)

when I tried to install it , it says it is already installed.

This is my OS:
OS Name: Microsoft Windows Server 2008 R2 Standard
OS Version: 6.1.7601 Service Pack 1 Build 7601

jskfan

ASKER

I am trying this one:

http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=977692&kbln=en-us

jskfan

ASKER

Have downloaded it from the link above:
Installation Successful: Windows successfully installed the following update: Hotfix for Windows (KB2732595)

jskfan

ASKER

The hotfix did not help...

The DC keeps shutting down again....

Any idea?

SOLUTION

Manjunath Sullad

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