so I had a working hackintosh, until I decided to upgrade it to putting in a zotac gtx 960. I plugged it in and it worked but all the is animations were weird because I hadn't installed the drivers. So I installed the appropriate drivers and then I restarted. Then after the apple logo on boot I got a black screen, so I took the gpu out, logged in and changed the system identifier to mac pro 4,1 instead of 6,1. Big mistake, now all I get is the same thing but it restarts after the black...
Help! Black screen after boot
Help! Black screen after boot