Trying to get the windows 7 repair disk to work through a USB drive

I can't seem to get it to work I downloaded Easy BCD 2.0 beta but when I opened it

"said the boot configuration data store could not be opened
The system could not find specified file"

I'm not that good with technology but I can follow directions good enough could someone help me out here how to get this working because my laptop is stuck on

"bootmngr missing ctrl alt delete to restart"