iMac (21.5-inch, Mid 2011) Is it possible to install windows trough USB?

I own a iMac (21.5-inch, Mid 2011), and my SuperDrive seems to be broken, I put a cd/dvd in it makes a bunch of noises and spits it out. This is a problem for me because I can't install Windows. I searched for day and couldn't find a solution. I tried downgrading from El Capitan to Mavericks so i can edit the Info.plist, to delete the PreUSB... thing, but that didn't work because after the mac booted it was asking for bootable device, because it didn't recognise the usb. Any solutions.

PS. I want to install form BootCamp not VirtualMachine. 🙂