I encrypted my External Drive with Bitlocker. But before it completes, computer shut down due to power failure. My Bitlocker Encryption Stuck in Paused State and now not able to resume it. When I try to Decrypt the External Drive through Control Panel, I get a pop-up with message "The Parameter is incorrect" I tried using "manage-bde -resume" on Command Prompt, it says - ERROR: An error occurred (code 0x80070057): The parameter is incorrect. Kindly help me out as I have to some very important data stored in that drive.

Hi, I would like suggest you try to use the Bitlocker Repair tool to recover a Drive. http://technet.microsoft.com/en-us/library/ee523219.aspx Hope this helps.Spencer TechNet Community Support

I tried using - 1) repair-bde -rp 2) manage-bde 3) chkdsk /r but, it ends up with the same error. right now, I am running "chkdsk /F /R /X" I will update the result once it is done. Request you to please let me know any other work around as I have important data.

After running the "chkdsk /F /R /X", still the problem is same. When I reboot my system after running the above command and clicked My H: drive, it asked for my BitLocker password. After entering the password, a screen popped up indicating to resume the BitLocker encryption. On clicking Resume, the error of "The parameter is incorrect." is shown. Also, I noticed that When I ran the Check Disk Utility, below mentioned came in first and then it proceeded further - The type of the file system is NTFS. The first NTFS boot sector is unreadable or corrupt. Reading second NTFS boot sector instead. CHKDSK is verifying files (stage 1 of 5)... I hope this will help in better understanding the problem. Kindly guide me further.

Hi, Since you cannot run chkdsk on this drive, you need to use a 3rd party recovery software to recover the data from the drive. If no progress, please use manage-bde status to export the Bitlocker status and post it here. Spencer TechNet Community Support