I started with a dual-boot system:
* Windows 7 Pro
* Windows 8.1 Pro
I upgraded to:
* Windows 7 Pro
* Windows 10 Pro

I used EasyBCD to change the default O/S from Windows 10 to Windows 7.
After that the boot menu was messed up.
* Windows 7
* Windows 7
Then it was
* Windows 7
* Windows 7
* Windows 10

I used EasyBCDs repair option and rebuilt the menu to:
* Windows 7 Pro
* Windows 10 Pro

After I rebooted the computer couldn't find a valid BCD to boot from.

Since I used a Windows 10 Pro 32-bit ISO file to install from I had to use
another computer to burn a Windows 10 Pro 32-bit DVD. I then did the following:

Boot with the Windows 10 Pro 32-bit DVD
Select Troubleshoot
Select Advanced options
Select Command Prompt

I typed the following commands
> bootrec.exe /rebuildbcd
> bootrec.exe /fixmbr
> bootrec.exe /fixboot

After I rebooted computer everything was back to normal.
I used EasyBCD to change the default O/S back to Windows 7 Pro but this time there were no problems.

My question is was there an easier way to fix the problem?