Is there a C:\Backup_MBR_0.bin ?
Is there a C:\newMBR.bin
See if you can run it from Windows:
Start, Run, cmd, OK to bring up a command window. Type:
C:\MbrFix /drive 0 savembr C:\Backup_MBR_0a.bin
(Does this command work? If so try:)
C:\MbrFix /drive 0 restorembr C:\newMBR.bin
Boot into the Recovery Console and run the fixboot c: command. Do not let it create a new partition.