Hi All I have a laptop where primary HDD has been encrypted using bitlocker, based on TPM. There was a problem with mainboard and was replaced by support, but there was a problem with running old disk on new mainboard - TPM has been turned off/disabled and option in BIOS was inactive. I had Bitlocker password saved so I took the disk out from computer and connected to another computer using USB-SATA bridge, entered a recovery password and data has been accessible. I decided to decrypt the disk and during decryprion process (when it was on 12%) power supply of this USB-SATA bridge had a failure and decryption process was interrupted. I connected this disk again, now I opened the desktop and plugged HDD directly, but... On Control Panel -> BitLocker Drive Encryption I see a status that BL for this drive is on but I see a symbol of padlock, and there is only option available "Unlock Volume", but when I clicked it error message appeared: Error recoveing disk E: BitLocker protection is disabled. From commandline when used "manage-bde -status" command I can see that: Size: Unknown GB Conversion Status: Unknown Percentage Encrypted: Unknown% Encryption Method: AES 128 with Diffuser Protection Status: Protection Off Lock Status: Locked Automatic Unlock: Enabled Key Protectors: Numerical Password TPM External Key External Key (Required for automatic unlock) but when tried unlock it: ERROR: The password failed to unlock volume E:. (code 0x1) Unknown runtime error Please help - some important files are located on this disk Best Regards Sebastian