OK bud, lets try this to get your oc working.
load f6a using qflash
load optimized settings, restart and go back into bios
change HDD to first boot, adjust hdd priority
take off the splash screen
put in ram timings and voltage manually
rest of the settings are basic as u tried previously,
this time lower the base clock to 190, and slowly work your way up working on the vcore, qpi/vtt, may be even cpu pll.
for testing you can go start the vcore a little higher then tighten slowly while checking the stability.
i have noticed that my 920 tends to require a little higher voltage then some of the others on here.
Bookmarks