Z87n-wifi issues with previous gen discrete cards

[nfanis]

Board has the latest F4 BIOS but still cant use my reference GTX570 neither GT640 or HD6970 and i mean in device manager are being recognised but when i connect the monitor to the discrete card it doesnt boot at all. Bios is on optimised defaults. With nvidia gtx760 and amd hd7950 cards works fine without any issues. Im sure this has to do with UEFI. Is gigabyte aware of this issue? is there any bios update inc for this?
Thanks in advance