I activated bitlocker with my drive and when it was encrypting something the power was suddenly interrupted. When I returned to my drive and entered the unlock password, The bitlocker wizard is not responding! Tried to wait for an hour but to no avail. Is there any way I can access the files again?
this MSKB Article explains How to use the BitLocker Repair Tool to help recover data from an encrypted volume.
although referring for Winows Vista and Server 2008, this should be valid for Windows 7 too.