can't do anything in the picker

managed to boot opencore, but i can't do anything in the picker, i followed Dortania guide

specs:

mobo: Asus P8H61 cpu: Intel Core i7 2600k ram: 6 GB DDR3 gpu: NVIDIA GeForce 9500 GT/Intel Hd Graphics 3000 Ethernet: RTL8168 Audio Codec: ALC887

previously it was only capable of booting Clover, now i made it so that it boots OpenCore, please help