Kindly I ask your attention.
There will be several options, would be great repair it with Windows 7 itself.
Start your browser, search with different search engines and use different phrases:
Windows 7 will only boot with CD/DVD
There will be a lot of links to go for;
Windows 7 boot.ini repair
Here you will find the answers you need, for example:
http://www.howtogeek.com/howto/32523/how-to-manually-repair-windows-7-boot-loader-problems/
Or,
Fix MBR Windows 7 by CommandPrompt
This might help!
:
http://www.sevenforums.com/general-discussion/17521-how-fix-mbr-through-command-prompt.html
When not, try it with a Boot Manager Program. They will be found/mentioned in almost all of the links.
Hopefully I let you known enough, that you will find the answers you seek!
Good luck and have fun doing it!
Best Regards,
MeneerWitte