See anything interesting at the end of this KB article by Microsoft?
In case they fix it (probably not)... Here is the bit:
/RebuildBcd The /RebuildBcd option scans all disks for installations that are compatible with Windows Vista or Windows 7. Additionally, this option lets you select the installations that you want to add to the BCD store. Use this option when you must completely rebuild the BCD. WAZOO
For an article reviewed recently, you would think there would not be a macro virus in play:
Article ID: 927392 - Last Review: July 12, 2013 - Revision: 10.1