I used Clover bootloader to install Mavericks to my build using the integrated graphics of my system (HD 4000) as installer wasn't giving any display. After setting up Mavericks completely and connecting my graphics card, clover boots up into a black screen (display goes on standby, if I type my password and press enter, the system works for a bit to open the mac desktop but the display stays blank). My system config is as follows:
Core i7 3770
Gigabyte 7970 3GB (GV-7970OC-3GD)
After searching around, my card is supported by Clover and Mavericks by default, so why can't I get any display on my main card?
Any help would be greatly appreciated as I really need my graphics card to work with my hackintosh for editing and animation purposes.
EDIT: I also tried connecting a GTX 660 to my machine and booting up with the display connected to 660. The hackintosh worked flawlessly. So what do I need to do to make it work with 7970?