Are you having bsod at all? Make a thread and post the crashes. I'll be able to sort it out most likely.This is happening with my new build too. I hope it's not the mobo. I'll get in to the bios later this weekend and see what's up.
Anyhow, check your RAM voltage. If it only happens on cold boots, they probably need more power.
Use CPU-Z to see the model number. Then visit manufacturer's site for proper voltage (VDIMM) and timings. Set bios manually and save,