How to install OS X 10.10 from USB?
Some OS software from another internet source other than Apple is not entirely reliable unless they are a certified Apple seller. In order to get back to the OS you want you can do a few things. Delete the HDD from disk utility and recover it from Internet Recovery. This should bring you to download El Capitan, after that you want to go to the app store and see if you have a version of Mavericks already downloaded, if you go great. If not, you are going to need to buy a copy and then download that onto your USB to reboot from there. Chances are, the copy of Mavericks you have is corrupt in some way or missing essential components.