i built my ivy bridge 3550 and ga-z77-d3h, About 3 days ago. I have F11 bios atm. About the 2nd day it started freezing nonestop, every 10secs or so, sometimes i couldnt edit bios because it would freeze. Anyways before rma'ing, i messed around with bios settings, booted into safe mode to make sure it wasnt a driver problem, i also disconnected everything to make sure it wasnt the dvd-rom drive or the memory sticks, i had 1 memory stick and tried it in every slot, still nothing, i event tried a 2nd pair of memory sticks. So i tried setting the BCLK to 100.10 as stated here on the forums and now it appears i am problem free, iwas able to boot many times, play rift, ect, all without a hicup.
Thanks all, but a question troubles me, how did you stumble upon this rare fix?