We have disk drive that encrypt with BitLocker . Is there any way to hack or crack and recover our data?
my key is lost. AND we haven't any backup from those data!
Unlikely. It's AES-CBC-128, so there's no chance of you cracking the key.
There are a few tools (e.g. Volatility, or Elcomsoft's forensics suite) that can recover the master key from a system memory dump, but that only works if the drive is already mounted and unlocked.