Reseller advised me that I made the wrong decision with the CPU and mobo combination. (He took pleasure in telling me

) Apparently the board doesn't support the overclocking of the i7-2600K.
However he did concede that it's on the supported CPU list and therefore should still boot. During the whole fiasco the Z68's have come out so I'm RMA'ing the GA-PH67A-UD3-B3 and purchasing a GA-Z68X-UD3-B3.
Let's hope that works and that it isn't the CPU

Thanks again for your speedy replies DM!