Hello. I have installed El Capitan but the resolution does not work at 1920x1080. Instead, it only works at 1280x1024. That said, I have installed custom nvidia drivers, since I have a GTX 970 G1. The problem is, every time I install those drivers and I reboot my computer, my monitor does not get recognized and puts itself into sleep mode. Please note that I have set my computer to MacPro3.1; if you could help me, that would be great. Some informations.. I made a clean install of El captain following the guide, and have had to insert the flag "dissble_driver=1" in order to make it work. I then installed it without any problem. My most important computer specs are: Gigabyte GTX 970, i7-4790K, Asus ROG VII Hero