Hi, I created an account specifically for this problem because its been frustrating me to no end. I apologize in advance if this is a long post. I recently followed this guide (http://www.reddit.com/r/mac/comments/2fy3be/by_popular_demand_my_better_than_bootcamp_guide/) to installing Windows in EFI mode on my Macbook Pro (non-retina) 2012 model with Intel 4000 HD integrated graphics card and Nvidia GT 650m dedicated graphics card. I made a bootable ISO using the Windows usb tool (Windows 8.1 Pro EFI) and downloaded the bootcamp drivers straight from the Apple support website (version 5.1.5621) and put it on the flash drive as well. The actual windows install went smoothly and I had no problems there. It's when I tried to install the Bootcamp drivers is when things started to go downhill. When launching the setup from the original 5.1.5621 bootcamp the setup would stop at installing the nvidia install and the screen would suddenly go black and would stay like that even after a restart (the comp would restart then suddenly go black once it boots into Windows). Looking online I found out some people had trouble with the latest bootcamp version and installed an earlier version (5.0.5033) and got that to work. So I reinstalled Windows and tried installing the Bootcamp drivers from version 5.0.5033, and the setup would just skip the nvidia driver install and would give me the blue screen of death when trying to install the Intel HD driver. Next I tried installing the drivers straight from nvidia and Intel, but both of those drivers gave me the same problems the bootcamp drivers game me (black screen for nvidia, crash blue screen of death for intel and restart/crash loop). I went to the device manager and saw that under display adapters, only Microsoft Basic display adapters are listed where both Intel HD 4000 and nvidia gt 650m are suppose to be listed. Trying to put the actual drivers on my desktop and update using device manager yielded the same results. I also tried just deleting the basic adapter drivers and just installing the intel/nvidia drivers, but then both installers for intel/nvidia said that no supported hardware was found. So I'm turning to you guys to see if you can help me before I give up on installing Windows on my mac altogether.