Q: Bootcamp Issues

Ok. Hello. First of all thank you for taking the time to view my forum post. Today I am not happy and chipper as I usually am after having to go through 5 Apple support techs in the chat support. Bellow is a summary of the events that have unfolded since yesterday, July 9th, 12pm. Please note I am on San Francisco time. For the sake of privacy I will name the 5th tech support Alex, his real name will be kept private.

My overall goal: To boot-camp my Macbook Pro with a Windows 8.1 ISO image

I received the ISO image from my friend who bought it off of Microsoft's website and then used Microsoft's software to create the ISO image on his PC. None of the software is pirated. I proceeded to insert a brand new 8-gb USB drive and open the Boot Camp program. Then I received the error message:

Your bootable USB drive could not be created

Boot Camp only supports Windows 7 or later installation on this platform. Please use an ISO file for Windows 7 or later installation.

After this I stupidly referred to the internet to find a solution that told me something about modifying an info.plist file within the Boot Camp program. After doing this the program would not open so then I had to reinstall my entire OSX. This all went smoothly and took about 4 support techs to solve. Then after the 4th support tech I was directed to a man named Alex who would help me solve the Boot Camp issue. for several hours I sat at my desk working with Alex to try and solve the error message that kept popping up (the one in red letters). It was then about 10 pm when Alex abandoned me. After referring to a tech support agent of a higher rank and trying to work through the problem with me using the screen share program. The chat box displayed "the chat has been disconnected" and then "Alex has left this conversation". And then the program closed and thanked me for using the screen share program. I was baffled. I wasn't and am still not sure whether or not Alex did that intentionally or whether it was a connection issue. My Wi-fi was perfect at the time and displayed a strong signal strength. I proceeded to send Apple a contact slip regarding an employee-customer relations issue.

And now, July 10th, 12:17 pm, my problem still persists and I still continue to get the same error message. Bear in mind that the USB drive is only 2 days old and the windows ISO file was downloaded directly from Microsoft and not modified in any way. My friend tried it on his computer and the Windows 8.1 setup wizard opened up. Alex had told me that since I had downloaded a brand new OSX that it wasn't an issue with Boot Camp or the USB. He told me that it was probably the ISO. But that was working on my friend's computer

And now this is where I turn to the community to seek help and assistance with solving an issue that an Apple support tech did not. Please submit pictures, reference, links, other forum posts, etc in an effort to aid me. I am desperate to install Windows as I have been waiting for months to install it. Below are listed all the specs that may be handy in helping me. If you need any other specs please please please don't hesitate to ask me.

Hardware:

Macbook Pro (Retina, 15-inch, Mid 2014)

Processor: 2.5 GHz Intel Core i7

Memory: 16 GB 1600 MHz DDR3

Startup Disk: Macintosh HD

Graphics: Intel Iris Pro 1536 MB

                 NVIDIA GeForce GT 750M

208.19 GB free of 4999.07 GB

Software:

OSX Yosemite 10.10.4

Windows ISO im trying to install

Windows 8.1 64-bit

Please help me in solving my Issue. If you need any more specs I am happy to provide them.