Toss it in the trash. Unless you can jtag it you can't get the Drive Key.
Hook the drive to the computer and dump the firmware see if the key is there.
The way you're explaining it, it seems the key is completely gone.
It is a nice one, mfd 2009-10-xx. it won't able to jtag.
Well until someone finds a new way to extract the CPU key, your only hope is to dump the kv.bin and brute-force it, but chances are smaller than getting the key from Microsoft hotline.