Server 2008 R2 BSOD c000021a Fatal System Error

Posted on 2013-06-07
Last Modified: 2016-11-23
Cannot get a Dell Power Edge T110 to boot after a single disc failed in a RAID 1 Config on Perc S100 Controller. Disk replaced and rebuild in RAID.

I've spent hours online reading, done the following:
Memtests and Disk Hardware Tests
Tried to Boot in Safemode, loads to storport.sys and then reboots
From the command prompt Run CHKDSK C: /F
boot using Last Known Good Configuration
bootrec /RebuildBcd
bootrec /FixMbr
bootrec /FixBoot
renamed c::\boot\bcd bcd.old
Recovered Registry from Regback in c:\Windows\System32\config\regback
I have marked the partition as Active in DiskPart
Disabled Driver Signature Enforcement in Advance Boot Options

The BSOD is get says the following:

STOP: c000021a {Fatal SyStem Error}
The verification of a knownDLL failed. system process terminated unexpectedly with a status of 0xc000012f (0x00086e00 0x000000000)
The system has been shut down.
Question by:sjordaan
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LVL 10

Expert Comment

ID: 39229744
Sounds like the controller for the hard drive driver is corrupt. get driver files and use a hirens disk to get to a prompt where you can copy the drivers to the server's hdd.  If you don't have a good backup of the drive I would clone the driver before attempting any repairs.

Author Comment

ID: 39229807
Thank you I have started the download of the Hirens disk. Just want to confirm, I should copy the controller drivers (bcraid.sys) files to the c:\windows\system32\drivers folder.

I'll clone the drive before attempting this.
LVL 11

Expert Comment

by:Pradeep Dubey
ID: 39230012
could you please do this once :
Load system registry once again and remove all entry from the below key except default one  

faulty system registry key is loaded as test

Also check for the automount key from the below location

It should not be in disabled state

after that boot the system.

take backup of registry :-)
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LVL 11

Expert Comment

by:Pradeep Dubey
ID: 39230056
Also let me know if memorydump is generated for this.

Author Comment

ID: 39230227
Sorry, no memorydump has been generated

Author Comment

ID: 39230237

Both of the above keys don't exist. Sorry no Key called Test is visible
LVL 11

Expert Comment

by:Pradeep Dubey
ID: 39230413
how you have accessed registry ?

Author Comment

ID: 39230489
Booted from Windows Server 2008 R2 DVD
System Recovery Options
Recovery Tool
Command Prompt
LVL 11

Expert Comment

by:Pradeep Dubey
ID: 39231442
Okay, after that you have to load the faulty machine system registry and when it asked to provide name you have to give any name I given test and that was the test indicated.

well providing you a screenshot for the same.

Accepted Solution

sjordaan earned 0 total points
ID: 39309524
After 20 hours of troubleshooting with Microsoft SBS Division, the only solution was to reload from scratch. Thank you all for your assistance

Author Closing Comment

ID: 39323066
Business Critical and we had to get the server running, Reload was our only option

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