I've seen times when the startup repair tool wasn't able to where you had to use the command prompt option to see results. The other option to try first is at the command prompt where you simply type in the "bootrec /rebuildbcd" command and close that up if you see the confirmation before use of the startup repair tool.

In the event you still are not able to boot into 7 after a few tries with the repair tool you can delete the old BCD store to see a new replace it. You would enter the following just the way you see it here.

bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd

You can refer to the MS page for this at How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows