Searching the Chief Delphi forums for "classmate bootmgr" yielded a few threads with advice that might help.
http://www.chiefdelphi.com/forums/sh...ad.php?t=88762
http://www.chiefdelphi.com/forums/sh...ad.php?t=88897
http://www.chiefdelphi.com/forums/sh...d.php?t=100520
http://www.chiefdelphi.com/forums/sh...d.php?t=100306
If everything else fails, you're welcome to bring your Classmate down to Kokomo and use our 2012 E09 flash drive to reload it.