Windows 10 BitLocker fails to unlock faulty volume

[Lurka]

Hi,
I have a machine with damaged Windows 10 partition. At startup it reports:

Your PC/Device needs to be repaired
The boot configuration data file doesn't contain valid information for an operating system

File: \BCD
Error code: 0xc0000098

Unfortunately, it is also encrypted with Bitlocker. I have the recovery key, but it says "Failed to unlock with this recovery key", most likely because the Windows partition is wrecked. The only possible choice is "Skip this drive".

I know little of Bitlocker inner workings.
I suppose that I cannot repair the volume, if I cannot unlock it.
But it seems I cannot unlock it, if I don't repair it first.

Can I try anything else, in addition to what is listed below?
Or is it better to resort to a specialized data recovery company?

===================================

From the recovery console command line, I tried manage-bde -unlock C: -rk [RECOVERY-KEY], but it reports:

ERROR: An error occurred (code 0x80070057):
The parameter is incorrect.

===================================

manage-bde -status can see only the Windows recovery pen drive:

X:\windows\system32>manage-bde -status
BitLocker Drive Encryption: Configuration Tool version 10.0.17134
Copyright (C) 2013 Microsoft Corporation. All rights reserved.

Disk volumes that can be protected with
BitLocker Drive Encryption:
Volume D: [RECOVERY]
[Data Volume]

Size: 28.88 GB
BitLocker Version: None
Conversion Status: Fully Decrypted
Percentage Encrypted: 0.0%
Encryption Method: None
Protection Status: Protection Off
Lock Status: Unlocked
Identification Field: None
Automatic Unlock: Disabled
Key Protectors: None Found

===================================

DISKPART can select Disk 0 (though it does not list it) and sees it as RAW filesystem:

DISKPART> select disk 0

Disk 0 is now the selected disk.

DISKPART> list disk

Disk ### Status Size Free Dyn Gpt
-------- ------------- ------- ------- --- ---
Disk 1 Online 28 GB 0 B

DISKPART> detail disk

SK hynix PC300 HFS512GD9MND-5510A
Disk ID: {A31DA725-0F45-422C-A655-4CF5DCA66A81}
Type : NVMe
Status : Online
Path : 0
Target : 0
LUN ID : 0
Location Path : PCIROOT(0)#PCI(1D00)#PCI(0000)#NVME(P00T00L00)
Current Read-only State : No
Read-only : No
Boot Disk : No
Pagefile Disk : No
Hibernation File Disk : No
Crashdump Disk : No
Clustered Disk : No

Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 0 C RAW Partition 475 GB Healthy
Volume 1 RAW Partition 1024 MB Healthy Hidden

DISKPART> list volume

Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 0 C RAW Partition 475 GB Healthy
Volume 1 RAW Partition 1024 MB Healthy Hidden
Volume 2 D RECOVERY FAT32 Removable 28 GB Healthy

=================================

BOOTREC commands /Scanos, /Fixmbr and /Rebuildbcd have no effect:

X:\windows\system32>bootrec /scanos
Scanning all disks for Windows installations.

Please wait, since this may take a while...

Successfully scanned Windows installations.
Total identified Windows installations: 0
The operation completed successfully.

X:\windows\system32>bootrec /fixmbr
Incorrect function.

X:\windows\system32>bootrec /rebuildbcd
Scanning all disks for Windows installations.

Please wait, since this may take a while...

Successfully scanned Windows installations.
Total identified Windows installations: 0
The operation completed successfully.

===============================

Thank you and best regars,
/_uke

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