Server 2008 R2 BSoD: c000021a {Fatal System Error} The Session manager initialization system process terminated unexpectedly with a status of 0xc000026c (0×00000000 0×00000000)

Our Server 2008 Standard R2 server is gettign the following BSoD:

Stop: c000021a {Fatal System Error} The Session manager initialization system process terminated unexpectedly with a status of 0xc000026c (0×00000000 0×00000000). The system has been shut down.

We can't boot into safe mode, and we did a chkdsk /f from startup recovery and it fixed some errors. After that we get an error before the BSoD AUTCHK not found skipping AUTOCHK

What do we do?
Keeran NetworksAsked:
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Keeran NetworksAuthor Commented:
The ironic thing is that we have been dealing with the server freezing unexpectedly in an unregular basis. Iwhen it froze we'd either have a completely black screen (probably besause of power saver) or it would show the current screen and ever sometimes weekly, sometimes monthly. Now it does this blue screen every boot and no safe mode

We are using and IBM BladeCenter H Chassis machine type: 88524YU and HS21 Blades machine type: 88534GU and booting off a DS3200 SAN machine type 1726-HC2
Shreedhar EtteCommented:
Hi,

Option 1:
- Boot the server with the bootable disk and go to command prompt.

- Backup the registry hives located at the C:\Windows\System32\Config.

- Replace the SOFTWARE and SYSTEM registry hives from the C:\Windows\System32\Config\RegBack with C:\Windows\System32\Config

Option2:
Refer this:
http://www.css-networks.com/2008/09/vista-stop-c000021a-fatal-system-error-the-initial-session-process-or-system-process-terminated-unexpectedly.html

Hopr this helps,
Shree

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rindiCommented:
Check your RAM using memtest86+. Also check the HD's of the server, for that you'll probably have to remove each disk and connect them to a non-raid system, then test them using the HD manufacturer's diagnostic utility. You'll find all those tools on the UBCD:

http://ultimatebootcd.com
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Windows Server 2008

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