I have two monitors, one is HDMI, and the other is DVI. My Graphics card is a radeon 7950. Upon boot, only my HDMI monitor has display unless I pull and replug my DVI (Strangely, the boot animation displays on both), in which case it will be recognized. How could I fix this? I read this for a possible fix (https://www.hackintosh.zone/apple/articles/how-to/fix-grey-screen-black-screen-mac-os-x-installation-hackintosh/), but I cannot boot into safe mode because the bootloader doesn't show up on boot... Ideas? Thank you!