0xc000000e error on Windows 10 after disk id change

Super User Asked by jamesgz on January 3, 2022

I wanted to change the hardware id of my boot drive. However, upon restarting my pc, i got error 0xc000000e:

What I did attempting to change hwid of my boot drive (C:):

  • Created Version 4 UUID with
    • Suppose I got a93a6e48-b935-47fb-92d6-4bb1fd06bd79
  • In regedit, I modified ComputerHKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlIDConfigDBHardware Profiles001HwProfileGuid to {a93a6e48-b935-47fb-92d6-4bb1fd06bd79}
  • In regedit, I modified ComputerHKEY_LOCAL_MACHINESOFTWAREMICROSOFTCRYPTOGRAPHYMachineGuid to a93a6e48-b935-47fb-92d6-4bb1fd06bd79
  • Created another Version 4 UUID
    • Suppose I got 9accca61-dbb7-4b6c-9968-347dcd3f0cfd
  • In admin CMD, I did the following
    • Diskpart
    • List item
    • select disk 0
    • uniqueid disk id=9accca61-dbb7-4b6c-9968-347dcd3f0cfd
    • bcdedit /default {9accca61-dbb7-4b6c-9968-347dcd3f0cfd}
    • bcdboot c:windows

I am not sure what I did wrong. How should I make my pc bootable again?

One Answer

I suggest this:

  • Create a Windows installation USB on another computer (if you don't already have one)
  • Boot into the Command Prompt
  • Undo your changes using the reg command (I hope you exported as backup the registry keys you changed). Note that you will need to use the REG LOAD command to operate on the registry in d:windowssystem32config.
  • Reboot.

If this does not help, restore the registry to a previous known good state by booting to the Command Prompt and entering the following commands:

cd d:windowssystem32
mkdir configBak
copy config configBak
cd configRegBack
copy * ..*

The above is described in detail in the article How to restore Registry from its secret backup on Windows 10, so read it well.

Note that the registry backup in the RegBack folder might go back too far in time, so you may lose some settings. Ensure also that the RegBack folder does contain the right files.

Answered by harrymc on January 3, 2022

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