I feel your pain, the DZ68BC crawls with issues since BIOS 0035, which BIOS did yours come with? you should try a second gen CPU first and see if it works. If your board come with board 0028 and below you will have to install 0035 but you will have to have a 2nd gen CPU first to be able to update the BIOS to 0035. The steps are to go through 0035 first then to the other 003x BIOS after
Which version of the board did you get?
Mine is version 402 that initially com with 0028 BIOS which is said to be transition BIOS to 003x
Damn i wish i would have gotten the DZ68ZV I initially wanted that coz it does not came with too much additional chips i always want every thin native to the Intel Chipset, I hope by 8 Series everything will be native
The same thing happened to me, i took it to where i bought it and they upgraded the BIOS with another processor, i think it was a celeron something, then replaced it with my i7 3770K, and now starts good.
Also i thought: why they sold me a motherboard that they knew it wouldnt start with my processor!!