Need to reset computer that has bitlocker activated Solved


  1. Posts : 2
    Windows 10 Professional
       02 Jul 2018 #1

    Need to reset computer that has bitlocker activated


    We have a computer with Bitlocker (TPM) on it and I use Sophos to track the recovery key. Each time you use the recovery key it resets the key and tells Sophos the new key. We don't have the windows password to log on so we cannot change the boot pin and I need to do a computer reset which will wipe out Sophos as it does a factory reset basically. How do I get the recovery key once the computer has been reset? Will the reset turn off Bitlocker? I am worried that we will lose total access to the PC.
      My ComputerSystem Spec

  2. Brink's Avatar
    Posts : 33,785
    64-bit Windows 10 Pro build 18282
       06 Jul 2018 #2

    Hello @chocaholic, and welcome to Ten Forums.

    If you like, you could do a clean install of Windows 10 on the PC to start fresh.

    Clean Install Windows 10 | Windows 10 Tutorials
      My ComputersSystem Spec

  3.    06 Jul 2018 #3

    No idea how Sophos works, so always make disk image and backup your Bitlocker recovery key before playing with TPM. Then you have two options:

    1. Before doing reset, at admin prompt enter command to decrypt your drive & remove key protectors if any:

    manage-bde -off C:

    Uninstall/deactivate Sophos, restart, reset OS.

    2. Decrypt your data to external disk (must be at least equal size), recovery key needed:

    repair-bde C: <TargetVolume>: -rp 111111-222222-333333-444444-555555-666666-777777-888888
    You must use your real TargetVolume and RecoveryKey.

    Perform clean install of OS, restore data from external drive. TPM will be reset before new use so keep your recovery key backup.
    Last edited by muchomurka; 06 Jul 2018 at 17:18.
      My ComputerSystem Spec


  4. Posts : 2
    Windows 10 Professional
    Thread Starter
       12 Jul 2018 #4

    The problem was resolved. I was able to work out the admin password after all. I had a typo when I changed the password. I tried lots of characters around it and got it.
      My ComputerSystem Spec

  5. Brink's Avatar
    Posts : 33,785
    64-bit Windows 10 Pro build 18282
       12 Jul 2018 #5

    Great news.
      My ComputersSystem Spec


 

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