DC shutdown unexpected

My Windows Server 2008 SP1 (32-bit) is a DC, it is found that this server shutdown unexpected randomly, sometimes; it happens at night, sometimes in afternoon.  With provided information in "code" area, can any one tell what will be the problem on server?

thanks!
- System 

  - Provider 

   [ Name]  EventLog 
 
  - EventID 6008 

   [ Qualifiers]  32768 
 
   Level 2 
 
   Task 0 
 
   Keywords 0x80000000000000 
 
  - TimeCreated 

   [ SystemTime]  2010-04-12T20:15:49.000Z 
 
   EventRecordID 17468 
 
   Channel System 
 
   Computer DC1.company.local 
 
   Security 
 

- EventData 

   12:20:33 PM 
   4/12/2010 
    
    
   1345815 
    
    
   DA07040001000C000C0014002100A103DA07040001000C00130014002100A1033C0000003C000000000000000000000000000000000000000100000000000000 


--------------------------------------------------------------------------------

Binary data:


In Words

0000: 000407DA 000C0001 0014000C 03A10021 
0008: 000407DA 000C0001 00140013 03A10021 
0010: 0000003C 0000003C 00000000 00000000 
0018: 00000000 00000000 00000001 00000000 


In Bytes

0000: DA 07 04 00 01 00 0C 00   Ú.......
0008: 0C 00 14 00 21 00 A1 03   ....!.¡.
0010: DA 07 04 00 01 00 0C 00   Ú.......
0018: 13 00 14 00 21 00 A1 03   ....!.¡.
0020: 3C 00 00 00 3C 00 00 00   <...<...
0028: 00 00 00 00 00 00 00 00   ........
0030: 00 00 00 00 00 00 00 00   ........
0038: 01 00 00 00 00 00 00 00   ........

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KANEWONGAsked:
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vmwarun - ArunCommented:
Check whether the Server has a password protected screensaver and check your Power Options (Start -> Run -> powercfg.cpl).
KANEWONGAuthor Commented:
yes, I have password protected screensaver and I am attaching a snapshot for my Power Options, what should I check in Power Options?
poweroption.GIF
vmwarun - ArunCommented:
Check whether "Put Computer to sleep in enabled" and if so disable it.
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KANEWONGAuthor Commented:
the setting for sleep is "Never".
rindiCommented:
Look for *.dmp files, usually in the C:\Windows directory or a member directory within that, zip the las 3, and upload them using the link below:

http://www.ee-stuff.com/

If the dump files are too large to upload, change how the dumps are saved on the server, right click "Computer", select "Properties", "Advanced System Settings", and under "Startup and Recovery", "Settings", under "System Failure", "Write debugging information", make sure to select "Small memory Dump". I usually also disable "Automatically restart", but someone would then have to manually boot the server whenever it crashes to a bluescreen.

After that wait until the next time this happens, and then zip the last *.dmp file and upload it.
Davis McCarnOwnerCommented:
Almost all of the hits on your event and its code lead to memory or BIOS problems.  Check to see if the system has a BIOS upgrade available and run the free version of http://www.memtest86.com
Jason WatkinsIT Project LeaderCommented:
How is the temperature in the area where the server is located? A high temp. could shut the box down.
KANEWONGAuthor Commented:
My Memory.dmp file attached, this file was generated on Jan 8th 2010, not the latest one but has the same shutdown issue.
MEMORY.zip
rindiCommented:
That file is partly corrupt and I can't gain any info from it. If this is the case with more dump files, I'd suspect the RAM (as has already been mentioned earlier), or maybe the file-system. Test the RAM using memtest86+. If that passes, also run a chkdsk /x on all drive letters.

You'll find memtest on the UBCD:

http://ultimatebootcd.com

Or run the memtest utility which you should have from the boot-loader when you start the server.

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Windows Server 2008

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