as you can see in my signature/profile, i have a very similar build to yours.
right now i installed mavericks on my build the third time, cause for me multi beast is messing things a little bit up. so when i make a clean install from usb, setting up ist pretty much like setting...
I THINK I DREAM DIFFERENT.
gb z87x ud5h with i7 4770k. installed mavericks – works perfectly. i thought i was setting up a real mac... using my apple id worked perfect during setup. imported all my bookmarks without any issues into safari.
usb works like a chime. sound via apple tv perfekt. wifi...
i also got a gb z87x ud5h with i7 4770k. currently using internal graphics before i install a gb gtx 770 windforce.
my bios is currently on f4 and i am only able to boot with -x otherwise i will get stuck with grey screen and apple logo.
but when i start with -x most things work fine except...