Installing windows 7 via bootcamp problem

[vsk96]

I followed the steps as boot camp instructed and made a bootable usb so I could install windows 7 on my mid-2012 macbook pro 13 inch. After bootcamp finished, it restarted my mac and it booted into the windows installation screen. I went forward and clicked install and it says the driver could not be found, it gives me an option to browse for the driver but I can't locate it on the bootable usb. I followed many guides and video tutorials and for some reason I am encountering this problem. I have booted into OSX and all the files are as should be on the usb. Anyone know how to fix this?

 

[vsk96]