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Windows 7: Windows Boot Manager error 0xc000225 on startup

05 Dec 2012   #1

Windows 7 Professional x64
Windows Boot Manager error 0xc000225 on startup

I recently updated my BIOS to fix some BSOD errors that the BIOS update was supposed to fix. Unfortunately for me, the update messed up the RAID 0 drive configuration - specifically, two of the three drives were no longer shown as part of the array.

After scouring the web, I followed someone's advice and removed the one remaining drive from the array and then setup the array exactly as it was in the past. After boot up, I got the 'Windows failed to start...' message.

From here, I downloaded and ran TESTDISK which showed that the original partition is just fine - everything appears to be where it should be. There is, however, another partition that TESTDISK shows:

Type: MS Data (marked as primary)
Size: ~ 100MB

This partition contains a directory labeled EFI and underneath that are two more directories: Microsoft and Boot. My guess is that this is the UEFI directory, but I do not know much about UEFI at this point.

I can get into the Windows 7 recovery mode and get to a command prompt. From here, the EFI partition shows as Drive C (which I've never seen before) and the regular windows partition shows as Drive E (don't know if that matters or not, but I thought I'd mention it anyway).

Running bcdedit returns with "The boot configuration data store could not be opened. The requested system device cannot be found."

Any help is greatly appreciated!

My System SpecsSystem Spec


 Windows Boot Manager error 0xc000225 on startup

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