During defragmenting the second drive, Defrag began "not responding". The computer was frozen and I did a hard shut-down (I held the power button until the computer shut off.) When I restarted the computer and tried to Defrag again, Windows would not allow this until I did some action (I cannot remember exactly what is was, but it was required to do it). This action required I restart the computer. Anyway, now all the files are corrupted.
Can these files be restored?