Download and install EasyBCD if you haven't got it already, and then open it,
and select "Useful Utilities" at the bottom of the left-hand selections buttons. In Useful Utilities, click on the middle icon in the top row of three, called "EasyBCD Power Console" and this opens a new window very much like the familiar Command Prompt or Windows Powershell window. And you use it the very same way. At the cursor, run the command bcdboot C:\Windows and press Enter.
You can then close command utility just like we do in CMD Prompt, by typing the word exit after it tells you it did what you asked. You can now close those open windows of EasyBCD, and reboot your system. Voila! The desired boot selection window is back! (Works for me!) Give this a try.