Did you try to create a win PE builder Live CD?
There should be a plugin as described in that link above:
3 Open Microsoft Windows Explorer and navigate to the
denotes the version number of
to the desired location. Copy Win32 folder from EETech\WinPE folder to the \pebuilderxxxxx\plugin folder.
It might be possible to run McAfee Endpoint Encryption within your PE builder live CD without getting a BSOD and have another try to repair and decrypt your partition?
Please let me know your OS.
It's important, because Bart's PE Builder is normally related to winXP.
Do you still have a WinXp-CD?
Often a normal Win-PE-Live CD works too.