1. Apparently you did not clean the disk before you reinstalled. If you have an independent 100MB active system partition, a reinstall would not fix that. it will just add a new BCD entry into that bootmgr.
2. Do the EasyBCD steps. There may be one little problem in Step 3. Because of your reinstall, you may have 2 Windows7 BCDs in the bootmgr. Make sure you delete the old one. Steps 4 and 5 should be easy though.
PS: You are too fast for me - LOL. EasyBCD has done the job. You can uninstall it. But I would keep it. May come in handy at another time.