Error message when you try to run the BitLocker Drive Encryption program: "Cannot run

To resolve this problem, edit the following BCD entries:

• Windows Boot Manager 
  Set this entry to point to the system partition. To do this, follow these steps:
  1. Click Start 
     
      , click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. 
     
     
     
      If you are prompted for an administrator password or for confirmation, type your password or clickContinue.
  2. At the command prompt, type bcdedit -set {bootmgr} device partition=S:
     
     Note In this command, S: represents the drive letter for the system partition.
• Windows Memory Tester 
  Set this entry to point to the system partition. To do this, type the following command at the elevated command prompt:
  bcdedit -set {memdiag} device partition=S:
  
  Note In this command, S: represents the drive letter for the system partition.
• Resume from Hibernate 
  Set this entry to point to the operating system partition. This partition is also known as the boot partition. To do this, follow these steps:
1. At the elevated command prompt, type bcdedit -enum all. 
   
   Note the identifier value for the Resume from Hibernate entry.
2. At the elevated command prompt, type bcdedit -set {identifier} device partition=C:.
   
   Note In this command, identifier represents the identifier value for the Resume from Hibernate entry in step 1 of this procedure. Also, C: represents the drive letter for the boot partition.

http://support.microsoft.com/kb/929834