GA Z77-D3H and GTX 770 won't boot

[Dunaria]

Hello. I tryed 2 GTX 770 in Store on my  Z77 D3H motherboad. 
I tryed first  Gigabyte GTX 770.
It stick at  gigabyte bios boot screen.
I tryed a Asus 770 as well  same problem.
I plugged back my old gtx 560.
I can't upgrade my board with a gtx 770.....
A) Can i do something to make it compatible? 
B) does the F19 bios  improve?
I bought that m-board 8 month ago.............

[ex58]

You have new BIOS F20a on TT forum:
http://forums.tweaktown.com/gigabyte/28441-gigabyte-latest-beta-bios.html

Flash with older card and try new one.
Good luck.