First,are you sure that the cpu is ok in the socket?I mean it has an arrow on it,is it in the right direction?
Reset the bios or try the bios 2.
Check your cables again.
Change ram slots using one dimm.
Otherwise the cpu is dead.
MAXIMUS V FORMULA - 3770K 4.9GHZ - GTX680 SLI - DOMINATOR GT 2000C8 - AX1200