Ijust got my external harddrive locked with the bitlocker application. I use windows 7. I was tryin to decrypt it, but something got crashed and now when i try to open my drive it says application falied and it says to enter the recovery key. I typed the one I have, but it says incorrect. I have no clue what to do, any help Please !

Do you have your security certificate available? My MVP is for the Windows Desktop Experience, i.e. Windows XP, Vista and Windows 7 IT Remote Assistance is available for a fee. I am best with C++ and I am learning C# using Visual Studio 2010 Developer | Windows IT | Chess | Economics | Hardcore Games | Vegan Advocate | PC Reviews

OK then there is a problem with the bitlocker key vault. What are you using, a TPM, USB stick, both? My MVP is for the Windows Desktop Experience, i.e. Windows XP, Vista and Windows 7 IT Remote Assistance is available for a fee. I am best with C++ and I am learning C# using Visual Studio 2010 Developer | Windows IT | Chess | Economics | Hardcore Games | Vegan Advocate | PC Reviews

What is a security certificate? and where do I find it? I have the password and recovery key.

If neither the password or the recovery are working then you are toast. I am considering a white paper on security for the IT site but this topic is very complex and involves a lot of research. I am developing some code now to for security that would make the NSA have fits. I wonder if there is a hardware issue that is affecting the disk. Can you see the disk in explorer? My MVP is for the Windows Desktop Experience, i.e. Windows XP, Vista and Windows 7 IT Remote Assistance is available for a fee. I am best with C++ and I am learning C# using Visual Studio 2010 Developer | Windows IT | Chess | Economics | Hardcore Games | Vegan Advocate | PC Reviews

Yes I can see the disk in explorer.

OK given you lack a USB copy of the keyring, you have lost your disk of files. My advise, do not use Bitlocker until you have learned all that is needed to use it safely. My MVP is for the Windows Desktop Experience, i.e. Windows XP, Vista and Windows 7 IT Remote Assistance is available for a fee. I am best with C++ and I am learning C# using Visual Studio 2010 Developer | Windows IT | Chess | Economics | Hardcore Games | Vegan Advocate | PC Reviews

It is TPM.